113 files changed, 9731 insertions, 2456 deletions
diff --git a/common_features.mk b/common_features.mk
index 8338ce408..6463efb8b 100644
--- a/common_features.mk
+++ b/common_features.mk
@@ -42,12 +42,31 @@ ifeq ($(strip $(COMMAND_ENABLE)), yes)
    OPT_DEFS += -DCOMMAND_ENABLE
 endif
+AUDIO_ENABLE ?= no
 ifeq ($(strip $(AUDIO_ENABLE)), yes)
+    ifeq ($(PLATFORM),CHIBIOS)
+        AUDIO_DRIVER ?= dac_basic
+        ifeq ($(strip $(AUDIO_DRIVER)), dac_basic)
+            OPT_DEFS += -DAUDIO_DRIVER_DAC
+        else ifeq ($(strip $(AUDIO_DRIVER)), dac_additive)
+            OPT_DEFS += -DAUDIO_DRIVER_DAC
+        ## stm32f2 and above have a usable DAC unit, f1 do not, and need to use pwm instead
+        else ifeq ($(strip $(AUDIO_DRIVER)), pwm_software)
+            OPT_DEFS += -DAUDIO_DRIVER_PWM
+        else ifeq ($(strip $(AUDIO_DRIVER)), pwm_hardware)
+            OPT_DEFS += -DAUDIO_DRIVER_PWM
+        endif
+    else
+        # fallback for all other platforms is pwm
+        AUDIO_DRIVER ?= pwm_hardware
+        OPT_DEFS += -DAUDIO_DRIVER_PWM
+    endif
    OPT_DEFS += -DAUDIO_ENABLE
    MUSIC_ENABLE = yes
    SRC += $(QUANTUM_DIR)/process_keycode/process_audio.c
    SRC += $(QUANTUM_DIR)/process_keycode/process_clicky.c
-    SRC += $(QUANTUM_DIR)/audio/audio_$(PLATFORM_KEY).c
+    SRC += $(QUANTUM_DIR)/audio/audio.c ## common audio code, hardware agnostic
+    SRC += $(QUANTUM_DIR)/audio/driver_$(PLATFORM_KEY)_$(strip $(AUDIO_DRIVER)).c
    SRC += $(QUANTUM_DIR)/audio/voices.c
    SRC += $(QUANTUM_DIR)/audio/luts.c
 endif
diff --git a/docs/_summary.md b/docs/_summary.md
index 526caf926..acbfcfaed 100644
--- a/docs/_summary.md
+++ b/docs/_summary.md
@@ -133,6 +133,7 @@
    * [Compatible Microcontrollers](compatible_microcontrollers.md)
    * [Drivers](hardware_drivers.md)
      * [ADC Driver](adc_driver.md)
+      * [Audio Driver](audio_driver.md)
      * [I2C Driver](i2c_driver.md)
      * [SPI Driver](spi_driver.md)
      * [WS2812 Driver](ws2812_driver.md)
diff --git a/docs/audio_driver.md b/docs/audio_driver.md
new file mode 100644
index 000000000..7cd5a98d9
--- /dev/null
+++ b/docs/audio_driver.md
@@ -0,0 +1,221 @@
+# Audio Driver :id=audio-driver
+The [Audio feature](feature_audio.md) breaks the hardware specifics out into separate, exchangeable driver units, with a common interface to the audio-"core" - which itself handles playing songs and notes while tracking their progress in an internal state, initializing/starting/stopping the driver as needed.
+Not all MCUs support every available driver, either the platform-support is not there (yet?) or the MCU simply does not have the required hardware peripheral.
+## AVR :id=avr
+Boards built around an Atmega32U4 can use two sets of PWM capable pins, each driving a separate speaker.
+The possible configurations are:
+|              | Timer3      | Timer1       |
+|--------------|-------------|--------------|
+| one speaker  | C4,C5 or C6 |              |
+| one speaker  |             | B4, B5 or B7 |
+| two speakers | C4,C5 or C6 | B4, B5 or B7 |
+Currently there is only one/default driver for AVR based boards, which is automatically configured to:
+```make
+AUDIO_DRIVER = pwm_hardware
+```
+## ARM :id=arm
+For Arm based boards, QMK depends on ChibiOS - hence any MCU supported by the later is likely usable, as long as certain hardware peripherals are available.
+Supported wiring configurations, with their ChibiOS/MCU peripheral requirement are listed below;
+piezo speakers are marked with :one: for the first/primary and :two: for the secondary.
+  | driver       | GPTD6<br>Tim6                            | GPTD7<br>Tim7          | GPTD8<br>Tim8 | PWMD1<sup>1</sup><br>Tim1_Ch1 |
+  |--------------|------------------------------------------|------------------------|---------------|-------------------------------|
+  | dac_basic    | A4+DACD1 = :one:                         | A5+DACD2 = :one:       | state         |                               |
+  |              | A4+DACD1 = :one: + Gnd                   | A5+DACD2 = :two: + Gnd | state         |                               |
+  |              | A4+DACD1 = :two: + Gnd                   | A5+DACD2 = :one: + Gnd | state         |                               |
+  |              | A4+DACD1 = :one: + Gnd                   |                        | state         |                               |
+  |              |                                          | A5+DACD2 = :one: + Gnd | state         |                               |
+  | dac_additive | A4+DACD1 = :one: + Gnd                   |                        |               |                               |
+  |              | A5+DACD2 = :one: + Gnd                   |                        |               |                               |
+  |              | A4+DACD1 + A5+DACD2 = :one: <sup>2</sup> |                        |               |                               |
+  | pwm_software | state-update                             |                        |               | any = :one:                   |
+  | pwm hardware | state-update                             |                        |               | A8 = :one: <sup>3</sup>       |
+<sup>1</sup>: the routing and alternate functions for PWM differ sometimes between STM32 MCUs, if in doubt consult the data-sheet  
+<sup>2</sup>: one piezo connected to A4 and A5, with AUDIO_PIN_ALT_AS_NEGATIVE set  
+<sup>3</sup>: TIM1_CH1 = A8 on STM32F103C8, other combinations are possible, see Data-sheet. configured with: AUDIO_PWM_DRIVER and AUDIO_PWM_CHANNEL
+### DAC basic :id=dac-basic
+The default driver for ARM boards, in absence of an overriding configuration.
+This driver needs one Timer per enabled/used DAC channel, to trigger conversion; and a third timer to trigger state updates with the audio-core.
+Additionally, in the board config, you'll want to make changes to enable the DACs, GPT for Timers 6, 7 and 8:
+``` c
+//halconf.h:
+#define HAL_USE_DAC                 TRUE
+#define HAL_USE_GPT                 TRUE
+#include_next <halconf.h>
+```
+``` c
+// mcuconf.h:
+#include_next <mcuconf.h>
+#undef STM32_DAC_USE_DAC1_CH1
+#define STM32_DAC_USE_DAC1_CH1              TRUE
+#undef STM32_DAC_USE_DAC1_CH2
+#define STM32_DAC_USE_DAC1_CH2              TRUE
+#undef STM32_GPT_USE_TIM6
+#define STM32_GPT_USE_TIM6                  TRUE
+#undef STM32_GPT_USE_TIM7
+#define STM32_GPT_USE_TIM7                  TRUE
+#undef STM32_GPT_USE_TIM8
+#define STM32_GPT_USE_TIM8                  TRUE
+```
+?> Note: DAC1 (A4) uses TIM6, DAC2 (A5) uses TIM7, and the audio state timer uses TIM8 (configurable). 
+You can also change the timer used for the overall audio state by defining the driver.  For instance: 
+```c
+#define AUDIO_STATE_TIMER GPTD9
+```
+### DAC additive :id=dac-additive
+only needs one timer (GPTD6, Tim6) to trigger the DAC unit to do a conversion; the audio state updates are in turn triggered during the DAC callback.
+Additionally, in the board config, you'll want to make changes to enable the DACs, GPT for Timer 6:
+``` c
+//halconf.h:
+#define HAL_USE_DAC                 TRUE
+#define HAL_USE_GPT                 TRUE
+#include_next <halconf.h>
+```
+``` c
+// mcuconf.h:
+#include_next <mcuconf.h>
+#undef STM32_DAC_USE_DAC1_CH1
+#define STM32_DAC_USE_DAC1_CH1              TRUE
+#undef STM32_DAC_USE_DAC1_CH2
+#define STM32_DAC_USE_DAC1_CH2              TRUE
+#undef STM32_GPT_USE_TIM6
+#define STM32_GPT_USE_TIM6                  TRUE
+```
+### DAC Config
+| Define                           | Defaults                   | Description                                                --------------------------------------------------------------------------------------------- |
+| `AUDIO_DAC_SAMPLE_MAX`           | `4095U`                    | Highest value allowed. Lower value means lower volume. And 4095U is the upper limit, since this is limited to a 12 bit value. Only effects non-pregenerated samples.  |
+| `AUDIO_DAC_OFF_VALUE`            | `AUDIO_DAC_SAMPLE_MAX / 2` | The value of the DAC when notplaying anything. Some setups may require a high (`AUDIO_DAC_SAMPLE_MAX`) or low (`0`) value here.                                        |
+| `AUDIO_MAX_SIMULTANEOUS_TONES`   | __see next table__         | The number of tones that can be played simultaneously.  A value that is too high may freeze the controller or glitch out when too many tones are being played.        |
+| `AUDIO_DAC_SAMPLE_RATE`          | __see next table__         | Effective bit rate of the DAC (in hertz), higher limits simultaneous tones, and lower sacrifices quality.                                                          |
+There are a number of predefined quality settings that you can use, with "sane minimum" being the default.  You can use custom values by simply defining the sample rate and number of simultaneous tones, instead of using one of the listed presets. 
+| Define                            | Sample Rate | Simultaneous tones  |
+| `AUDIO_DAC_QUALITY_VERY_LOW`      | `11025U`    | `8`                 |
+| `AUDIO_DAC_QUALITY_LOW`           | `22040U`    | `4`                 |
+| `AUDIO_DAC_QUALITY_HIGH`          | `44100U`    | `2`                 |
+| `AUDIO_DAC_QUALITY_VERY_HIGH`     | `88200U`    | `1`                 |
+| `AUDIO_DAC_QUALITY_SANE_MINIMUM`  | `16384U`    | `8`                 |
+```c
+        /* zero crossing (or approach, whereas zero == DAC_OFF_VALUE, which can be configured to anything from 0 to DAC_SAMPLE_MAX)
+         * ============================*=*========================== AUDIO_DAC_SAMPLE_MAX
+         *                          *       *
+         *                        *           *
+         * ---------------------------------------------------------
+         *                     *                 *                  } AUDIO_DAC_SAMPLE_MAX/100
+         * --------------------------------------------------------- AUDIO_DAC_OFF_VALUE
+         *                  *                       *               } AUDIO_DAC_SAMPLE_MAX/100
+         * ---------------------------------------------------------
+         *               *
+         * *           *
+         *   *       *
+         * =====*=*================================================= 0x0
+         */
+```
+### PWM hardware :id=pwm-hardware
+This driver uses the ChibiOS-PWM system to produce a square-wave on specific output pins that are connected to the PWM hardware.
+The hardware directly toggles the pin via its alternate function. See your MCU's data-sheet for which pin can be driven by what timer - looking for TIMx_CHy and the corresponding alternate function.
+A configuration example for the STM32F103C8 would be:
+``` c
+//halconf.h:
+#define HAL_USE_PWM                 TRUE
+#define HAL_USE_PAL                 TRUE
+#define HAL_USE_GPT                 TRUE
+#include_next <halconf.h>
+```
+``` c
+// mcuconf.h:
+#include_next <mcuconf.h>
+#undef STM32_PWM_USE_TIM1
+#define STM32_PWM_USE_TIM1                  TRUE
+#undef STM32_GPT_USE_TIM4
+#define STM32_GPT_USE_TIM4                  TRUE
+```
+If we now target pin A8, looking through the data-sheet of the STM32F103C8, for the timers and alternate functions
+- TIM1_CH1 = PA8 <- alternate0
+- TIM1_CH2 = PA9
+- TIM1_CH3 = PA10
+- TIM1_CH4 = PA11
+with all this information, the configuration would contain these lines:
+``` c
+//config.h:
+#define AUDIO_PIN A8
+#define AUDIO_PWM_DRIVER PWMD1
+#define AUDIO_PWM_CHANNEL 1
+#define AUDIO_STATE_TIMER GPTD4
+```
+ChibiOS uses GPIOv1 for the F103, which only knows of one alternate function.
+On 'larger' STM32s, GPIOv2 or GPIOv3 are used; with them it is also necessary to configure `AUDIO_PWM_PAL_MODE` to the correct alternate function for the selected pin, timer and timer-channel.
+### PWM software :id=pwm-software
+This driver uses the PWM callbacks from PWMD1 with TIM1_CH1 to toggle the selected AUDIO_PIN in software.
+During the same callback, with AUDIO_PIN_ALT_AS_NEGATIVE set, the AUDIO_PIN_ALT is toggled inversely to AUDIO_PIN. This is useful for setups that drive a piezo from two pins (instead of one and Gnd).
+You can also change the timer used for software PWM by defining the driver.  For instance: 
+```c
+#define AUDIO_STATE_TIMER GPTD8
+```
+### Testing Notes :id=testing-notes
+While not an exhaustive list, the following table provides the scenarios that have been partially validated:
+|                          | DAC basic          | DAC additive       | PWM hardware       | PWM software       |
+|--------------------------|--------------------|--------------------|--------------------|--------------------|
+| Atmega32U4               | :o:                | :o:                | :heavy_check_mark: | :o:                |
+| STM32F103C8 (bluepill)   | :x:                | :x:                | :heavy_check_mark: | :heavy_check_mark: |
+| STM32F303CCT6 (proton-c) | :heavy_check_mark: | :heavy_check_mark: | ?                  | :heavy_check_mark: |
+| STM32F405VG              | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: | :heavy_check_mark: |
+| L0xx                     | :x: (no Tim8)      | ?                  | ?                  | ?                  |
+:heavy_check_mark: : works and was tested  
+:o: : does not apply  
+:x: : not supported by MCU
+*Other supported ChibiOS boards and/or pins may function, it will be highly chip and configuration dependent.*
diff --git a/docs/config_options.md b/docs/config_options.md
index 9a64b9b3d..aeaaf47aa 100644
--- a/docs/config_options.md
+++ b/docs/config_options.md
@@ -67,16 +67,22 @@ This is a C header file that is one of the first things included, and will persi
  * turns on the alternate audio voices (to cycle through)
 * `#define C4_AUDIO`
  * enables audio on pin C4
+  * Deprecated. Use `#define AUDIO_PIN C4`
 * `#define C5_AUDIO`
  * enables audio on pin C5
+  * Deprecated. Use `#define AUDIO_PIN C5`
 * `#define C6_AUDIO`
  * enables audio on pin C6
+  * Deprecated. Use `#define AUDIO_PIN C6`
 * `#define B5_AUDIO`
-  * enables audio on pin B5 (duophony is enables if one of B[5-7]\_AUDIO is enabled along with one of C[4-6]\_AUDIO)
+  * enables audio on pin B5 (duophony is enabled if one of B pins is enabled along with one of C pins)
+  * Deprecated. Use `#define AUDIO_PIN B5`, or use `#define AUDIO_PIN_ALT B5` if a `C` pin is enabled with `AUDIO_PIN`
 * `#define B6_AUDIO`
-  * enables audio on pin B6 (duophony is enables if one of B[5-7]\_AUDIO is enabled along with one of C[4-6]\_AUDIO)
+  * enables audio on pin B5 (duophony is enabled if one of B pins is enabled along with one of C pins)
+  * Deprecated. Use `#define AUDIO_PIN B6`, or use `#define AUDIO_PIN_ALT B6` if a `C` pin is enabled with `AUDIO_PIN`
 * `#define B7_AUDIO`
-  * enables audio on pin B7 (duophony is enables if one of B[5-7]\_AUDIO is enabled along with one of C[4-6]\_AUDIO)
+  * enables audio on pin B5 (duophony is enabled if one of B pins is enabled along with one of C pins)
+  * Deprecated. Use `#define AUDIO_PIN B7`, or use `#define AUDIO_PIN_ALT B7` if a `C` pin is enabled with `AUDIO_PIN`
 * `#define BACKLIGHT_PIN B7`
  * pin of the backlight
 * `#define BACKLIGHT_LEVELS 3`
diff --git a/docs/feature_audio.md b/docs/feature_audio.md
index 68ba4477a..9e7ba75f5 100644
--- a/docs/feature_audio.md
+++ b/docs/feature_audio.md
@@ -1,21 +1,117 @@
 # Audio
-Your keyboard can make sounds! If you've got a Planck, Preonic, or basically any AVR keyboard that allows access to certain PWM-capable pins, you can hook up a simple speaker and make it beep. You can use those beeps to indicate layer transitions, modifiers, special keys, or just to play some funky 8bit tunes.
+Your keyboard can make sounds! If you've got a spare pin you can hook up a simple speaker and make it beep. You can use those beeps to indicate layer transitions, modifiers, special keys, or just to play some funky 8bit tunes.
-Up to two simultaneous audio voices are supported, one driven by timer 1 and another driven by timer 3.  The following pins can be defined as audio outputs in config.h:
+To activate this feature, add `AUDIO_ENABLE = yes` to your `rules.mk`.
-Timer 1:
+## AVR based boards
-`#define B5_AUDIO`
+On Atmega32U4 based boards, up to two simultaneous tones can be rendered.
-`#define B6_AUDIO`
+With one speaker connected to a PWM capable pin on PORTC driven by timer 3 and the other on one of the PWM pins on PORTB driven by timer 1.
-`#define B7_AUDIO`
-Timer 3:
+The following pins can be configured as audio outputs in `config.h` - for one speaker set eiter one out of:
-`#define C4_AUDIO`
-`#define C5_AUDIO`
-`#define C6_AUDIO`
-If you add `AUDIO_ENABLE = yes` to your `rules.mk`, there's a couple different sounds that will automatically be enabled without any other configuration:
+* `#define AUDIO_PIN C4`
+* `#define AUDIO_PIN C5`
+* `#define AUDIO_PIN C6`
+* `#define AUDIO_PIN B5`
+* `#define AUDIO_PIN B6`
+* `#define AUDIO_PIN B7`
+and *optionally*, for a second speaker, one of:
+* `#define AUDIO_PIN_ALT B5`
+* `#define AUDIO_PIN_ALT B6`
+* `#define AUDIO_PIN_ALT B7`
+### Wiring
+per speaker is - for example with a piezo buzzer - the black lead to Ground, and the red lead connected to the selected AUDIO_PIN for the primary; and similarly with AUDIO_PIN_ALT for the secondary.
+## ARM based boards
+for more technical details, see the notes on [Audio driver](audio_driver.md).
+<!-- because I'm not sure where to fit this in: https://waveeditonline.com/ -->
+### DAC (basic)
+Most STM32 MCUs have DAC peripherals, with a notable exception of the STM32F1xx series. Generally, the DAC peripheral drives pins A4 or A5. To enable DAC-based audio output on STM32 devices, add `AUDIO_DRIVER = dac_basic` to `rules.mk` and set in `config.h` either:
+`#define AUDIO_PIN A4` or `#define AUDIO_PIN A5`
+the other DAC channel can optionally be used with a secondary speaker, just set:
+`#define AUDIO_PIN_ALT A4` or `#define AUDIO_PIN_ALT A5`
+Do note though that the dac_basic driver is only capable of reproducing one tone per speaker/channel at a time, for more tones simultaneously, try the dac_additive driver.
+#### Wiring:
+for two piezos, for example configured as `AUDIO_PIN A4` and `AUDIO_PIN_ALT A5` would be: red lead to A4 and black to Ground, and similarly with the second one: A5 = red, and Ground = black
+another alternative is to drive *one* piezo with both DAC pins - for an extra "push".
+wiring red to A4 and black to A5 (or the other way round) and add `#define AUDIO_PIN_ALT_AS_NEGATIVE` to `config.h`
+##### Proton-C Example:
+The Proton-C comes (optionally) with one 'builtin' piezo, which is wired to A4+A5.
+For this board `config.h` would include these defines:
+```c
+#define AUDIO_PIN A5
+#define AUDIO_PIN_ALT A4
+#define AUDIO_PIN_ALT_AS_NEGATIVE
+```
+### DAC (additive)
+Another option, besides dac_basic (which produces sound through a square-wave), is to use the DAC to do additive wave synthesis.
+With a number of predefined wave-forms or by providing your own implementation to generate samples on the fly.
+To use this feature set `AUDIO_DRIVER = dac_additive` in your `rules.mk`, and select in `config.h` EITHER `#define AUDIO_PIN A4` or `#define AUDIO_PIN A5`.
+The used waveform *defaults* to sine, but others can be selected by adding one of the following defines to `config.h`:
+* `#define AUDIO_DAC_SAMPLE_WAVEFORM_SINE`
+* `#define AUDIO_DAC_SAMPLE_WAVEFORM_TRIANGLE`
+* `#define AUDIO_DAC_SAMPLE_WAVEFORM_TRAPEZOID`
+* `#define AUDIO_DAC_SAMPLE_WAVEFORM_SQUARE`
+Should you rather choose to generate and use your own sample-table with the DAC unit, implement `uint16_t dac_value_generate(void)` with your keyboard - for an example implementation see keyboards/planck/keymaps/synth_sample or keyboards/planck/keymaps/synth_wavetable
+### PWM (software)
+if the DAC pins are unavailable (or the MCU has no usable DAC at all, like STM32F1xx); PWM can be an alternative.
+Note that there is currently only one speaker/pin supported.
+set in `rules.mk`:
+`AUDIO_DRIVER = pwm_software` and in `config.h`: 
+`#define AUDIO_PIN C13` (can be any pin) to have the selected pin output a pwm signal, generated from a timer callback which toggles the pin in software.
+#### Wiring
+the usual piezo wiring: red goes to the selected AUDIO_PIN, black goes to ground.
+OR if you can chose to drive one piezo with two pins, for example `#define AUDIO_PIN B1`, `#define AUDIO_PIN_ALT B2` in `config.h`, with `#define AUDIO_PIN_ALT_AS_NEGATIVE` - then the red lead could go to B1, the black to B2.
+### PWM (hardware)
+STM32F1xx have to fall back to using PWM, but can do so in hardware; but again on currently only one speaker/pin.
+`AUDIO_DRIVER = pwm_hardware` in `rules.mk`, and in `config.h`:
+`#define AUDIO_PIN A8`
+`#define AUDIO_PWM_DRIVER PWMD1`
+`#define AUDIO_PWM_CHANNEL 1`
+(as well as `#define AUDIO_PWM_PAL_MODE 42` if you are on STM32F2 or larger)
+which will use Timer 1 to directly drive pin PA8 through the PWM hardware (TIM1_CH1 = PA8).
+Should you want to use the pwm-hardware on another pin and timer - be ready to dig into the STM32 data-sheet to pick the right TIMx_CHy and pin-alternate function.
+## Tone Multiplexing
+Since most drivers can only render one tone per speaker at a time (with the one exception: arm dac-additive) there also exists a "workaround-feature" that does time-slicing/multiplexing - which does what the name implies: cycle through a set of active tones (e.g. when playing chords in Music Mode) at a given rate, and put one tone at a time out through the one/few speakers that are available.
+To enable this feature, and configure a starting-rate, add the following defines to `config.h`:
+```c
+#define AUDIO_ENABLE_TONE_MULTIPLEXING
+#define AUDIO_TONE_MULTIPLEXING_RATE_DEFAULT 10
+```
+The audio core offers interface functions to get/set/change the tone multiplexing rate from within `keymap.c`.
+## Songs
+There's a couple of different sounds that will automatically be enabled without any other configuration:
 ```
 STARTUP_SONG // plays when the keyboard starts up (audio.c)
 GOODBYE_SONG // plays when you press the RESET key (quantum.c)
@@ -67,15 +163,34 @@ The available keycodes for audio are:
 * `AU_OFF` - Turn Audio Feature off
 * `AU_TOG` - Toggle Audio Feature state
-!> These keycodes turn all of the audio functionality on and off.  Turning it off means that audio feedback, audio clicky, music mode, etc. are disabled, completely. 
+!> These keycodes turn all of the audio functionality on and off.  Turning it off means that audio feedback, audio clicky, music mode, etc. are disabled, completely.
+## Tempo
+the 'speed' at which SONGs are played is dictated by the set Tempo, which is measured in beats-per-minute. Note lenghts are defined relative to that.
+The initial/default tempo is set to 120 bpm, but can be configured by setting `TEMPO_DEFAULT` in `config.c`.
+There is also a set of functions to modify the tempo from within the user/keymap code:
+```c
+void audio_set_tempo(uint8_t tempo);
+void audio_increase_tempo(uint8_t tempo_change);
+void audio_decrease_tempo(uint8_t tempo_change);
+```
 ## ARM Audio Volume
-For ARM devices, you can adjust the DAC sample values. If your board is too loud for you or your coworkers, you can set the max using `DAC_SAMPLE_MAX` in your `config.h`:
+For ARM devices, you can adjust the DAC sample values. If your board is too loud for you or your coworkers, you can set the max using `AUDIO_DAC_SAMPLE_MAX` in your `config.h`:
 ```c
-#define DAC_SAMPLE_MAX 65535U
+#define AUDIO_DAC_SAMPLE_MAX 4095U
 ```
+the DAC usually runs in 12Bit mode, hence a volume of 100% = 4095U
+Note: this only adjusts the volume aka 'works' if you stick to WAVEFORM_SQUARE, since its samples are generated on the fly - any other waveform uses a hardcoded/precomputed sample-buffer.
+## Voices
+Aka "audio effects", different ones can be enabled by setting in `config.h` these defines:
+`#define AUDIO_VOICES` to enable the feature, and `#define AUDIO_VOICE_DEFAULT something` to select a specific effect
+for details see quantum/audio/voices.h and .c
 ## Music Mode
diff --git a/keyboards/1upkeyboards/sweet16/v2/proton_c/config.h b/keyboards/1upkeyboards/sweet16/v2/proton_c/config.h
index 30abf28ee..286af1857 100644
--- a/keyboards/1upkeyboards/sweet16/v2/proton_c/config.h
+++ b/keyboards/1upkeyboards/sweet16/v2/proton_c/config.h
@@ -18,3 +18,7 @@
 #define ENCODERS_PAD_A { A2 }
 #define ENCODERS_PAD_B { A1 }
 #define ENCODER_RESOLUTION 4
+#define AUDIO_PIN A5
+#define AUDIO_PIN_ALT A4
+#define AUDIO_PIN_ALT_AS_NEGATIVE
diff --git a/keyboards/atomic/keymaps/pvc/config.h b/keyboards/atomic/keymaps/pvc/config.h
index 3803a2ccd..01fa0f431 100644
--- a/keyboards/atomic/keymaps/pvc/config.h
+++ b/keyboards/atomic/keymaps/pvc/config.h
@@ -31,7 +31,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define BACKLIGHT_PIN B7
 #define BACKLIGHT_BREATHING
-#define C6_AUDIO
+#define AUDIO_PIN C6
 /* COL2ROW or ROW2COL */
 #define DIODE_DIRECTION COL2ROW
diff --git a/keyboards/boston_meetup/2019/config.h b/keyboards/boston_meetup/2019/config.h
index 3f2a0dd5d..d9fd93da6 100644
--- a/keyboards/boston_meetup/2019/config.h
+++ b/keyboards/boston_meetup/2019/config.h
@@ -31,7 +31,10 @@
 //Audio
 #undef AUDIO_VOICES
-#undef C6_AUDIO
+#undef AUDIO_PIN
+#define AUDIO_PIN A5
+#define AUDIO_PIN_ALT A4
+#define AUDIO_PIN_ALT_AS_NEGATIVE
 #ifdef AUDIO_ENABLE
    #define STARTUP_SONG SONG(ONE_UP_SOUND)
diff --git a/keyboards/c39/keymaps/kuchosauronad0/config.h b/keyboards/c39/keymaps/kuchosauronad0/config.h
index cf0726e2b..d67935a9f 100644
--- a/keyboards/c39/keymaps/kuchosauronad0/config.h
+++ b/keyboards/c39/keymaps/kuchosauronad0/config.h
@@ -32,12 +32,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #  define RGB_DI_PIN D0
 #  define RGBLED_NUM 4
 #endif // !RGBLIGHT_ENABLE
-/*
-#ifdef AUDIO_ENABLE
-#  Timer 1: #define B5_AUDIO #define B6_AUDIO #define B7_AUDIO
-#  Timer 3: #define C4_AUDIO #define C5_AUDIO #define C6_AUDIO
-//TODO: only D0 and D1 available
-#endif // !AUDIO_ENABLE
-*/
diff --git a/keyboards/ckeys/obelus/config.h b/keyboards/ckeys/obelus/config.h
index eaf4811ba..25bc1db03 100644
--- a/keyboards/ckeys/obelus/config.h
+++ b/keyboards/ckeys/obelus/config.h
@@ -154,7 +154,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifdef AUDIO_ENABLE
  #define AUDIO_VOICES
-  #define C6_AUDIO
+  #define AUDIO_PIN C6
  #define STARTUP_SONG SONG(STARTUP_SOUND)
 #endif
diff --git a/keyboards/ckeys/thedora/config.h b/keyboards/ckeys/thedora/config.h
index 349e33748..c7557aa62 100755
--- a/keyboards/ckeys/thedora/config.h
+++ b/keyboards/ckeys/thedora/config.h
@@ -157,6 +157,9 @@
 // NOTE: Must change polyphony_rate to a number higher than 0 in voices.c
 #define AUDIO_VOICES
 #define PITCH_STANDARD_A 880.0f
+#define AUDIO_PIN A5
+#define AUDIO_PIN_ALT A4
+#define AUDIO_PIN_ALT_AS_NEGATIVE
 // Mouse keys
 #define MOUSEKEY_DELAY 0
diff --git a/keyboards/clueboard/2x1800/2018/config.h b/keyboards/clueboard/2x1800/2018/config.h
index 40486379e..9d5b9b514 100644
--- a/keyboards/clueboard/2x1800/2018/config.h
+++ b/keyboards/clueboard/2x1800/2018/config.h
@@ -20,8 +20,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #include "config_common.h"
 /* audio support */
-#define B7_AUDIO
+#define AUDIO_PIN_ALT B7
-#define C4_AUDIO
+#define AUDIO_PIN C4
 #define AUDIO_CLICKY
 /* Mechanical locking support. Use KC_LCAP, KC_LNUM or KC_LSCR instead in keymap */
diff --git a/keyboards/clueboard/2x1800/2019/config.h b/keyboards/clueboard/2x1800/2019/config.h
index 595dc6108..162d41a2e 100644
--- a/keyboards/clueboard/2x1800/2019/config.h
+++ b/keyboards/clueboard/2x1800/2019/config.h
@@ -27,8 +27,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define ENCODER_RESOLUTION 4
 /* audio support */
-#define B7_AUDIO
+#define AUDIO_PIN_ALT B7
-#define C4_AUDIO
+#define AUDIO_PIN C4
 #define AUDIO_CLICKY
 /*
diff --git a/keyboards/clueboard/66/rev4/config.h b/keyboards/clueboard/66/rev4/config.h
index c745b5a11..2c11cf1ec 100644
--- a/keyboards/clueboard/66/rev4/config.h
+++ b/keyboards/clueboard/66/rev4/config.h
@@ -22,3 +22,7 @@
 #define RGBLIGHT_EFFECT_KNIGHT_OFFSET 2   // The led to start at
 #define RGBLIGHT_EFFECT_KNIGHT_LED_NUM 5  // How many LEDs to travel
 #define RGBLIGHT_EFFECT_SNAKE_LENGTH 4    // How many LEDs wide to light up
+#define AUDIO_PIN A5
+#define AUDIO_PIN_ALT A4
+#define AUDIO_PIN_ALT_AS_NEGATIVE
diff --git a/keyboards/clueboard/66_hotswap/gen1/config.h b/keyboards/clueboard/66_hotswap/gen1/config.h
index 1ddcfacf4..1471af63d 100644
--- a/keyboards/clueboard/66_hotswap/gen1/config.h
+++ b/keyboards/clueboard/66_hotswap/gen1/config.h
@@ -108,3 +108,7 @@
 #define LED_DRIVER_COUNT 1
 #define LED_DRIVER_LED_COUNT 71
+#define AUDIO_PIN A5
+#define AUDIO_PIN_ALT A4
+#define AUDIO_PIN_ALT_AS_NEGATIVE
diff --git a/keyboards/clueboard/66_hotswap/prototype/config.h b/keyboards/clueboard/66_hotswap/prototype/config.h
index 5c22b927a..a1ab703c3 100644
--- a/keyboards/clueboard/66_hotswap/prototype/config.h
+++ b/keyboards/clueboard/66_hotswap/prototype/config.h
@@ -3,7 +3,7 @@
 /* Speaker configuration
 */
-#define B7_AUDIO
+#define AUDIO_PIN B7
 #define NO_MUSIC_MODE
 #define AUDIO_CLICKY
diff --git a/keyboards/clueboard/california/config.h b/keyboards/clueboard/california/config.h
index b8c5759db..017f1ddf6 100644
--- a/keyboards/clueboard/california/config.h
+++ b/keyboards/clueboard/california/config.h
@@ -1,3 +1,7 @@
 #pragma once
 #include "config_common.h"
+#define AUDIO_PIN A5
+#define AUDIO_PIN_ALT A4
+#define AUDIO_PIN_ALT_AS_NEGATIVE
diff --git a/keyboards/clueboard/card/config.h b/keyboards/clueboard/card/config.h
index 67ddb5e25..a115f5d6c 100644
--- a/keyboards/clueboard/card/config.h
+++ b/keyboards/clueboard/card/config.h
@@ -23,4 +23,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define BACKLIGHT_LEVELS 6
 // Enable audio
-#define C6_AUDIO
+#define AUDIO_PIN C6
diff --git a/keyboards/crkbd/keymaps/gotham/config.h b/keyboards/crkbd/keymaps/gotham/config.h
index ed08203aa..dd58a0fe0 100644
--- a/keyboards/crkbd/keymaps/gotham/config.h
+++ b/keyboards/crkbd/keymaps/gotham/config.h
@@ -15,7 +15,7 @@
 #define NO_ACTION_ONESHOT
 #ifdef AUDIO_ENABLE
-#    define B5_AUDIO
+#    define AUDIO_PIN B5
 #    define NO_MUSIC_MODE
 #    define AUDIO_CLICKY
 #endif
diff --git a/keyboards/ergodash/mini/config.h b/keyboards/ergodash/mini/config.h
index 5e16c7854..b936e0f54 100644
--- a/keyboards/ergodash/mini/config.h
+++ b/keyboards/ergodash/mini/config.h
@@ -45,7 +45,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* define if matrix has ghost */
 //#define MATRIX_HAS_GHOST
-#define C6_AUDIO
+#define AUDIO_PIN C6
 /* number of backlight levels */
 #ifdef BACKLIGHT_ENABLE
diff --git a/keyboards/ergodash/rev1/config.h b/keyboards/ergodash/rev1/config.h
index 6e25194e4..07282cdad 100644
--- a/keyboards/ergodash/rev1/config.h
+++ b/keyboards/ergodash/rev1/config.h
@@ -45,7 +45,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* define if matrix has ghost */
 //#define MATRIX_HAS_GHOST
-#define C6_AUDIO
+#define AUDIO_PIN C6
 /* number of backlight levels */
 #ifdef BACKLIGHT_ENABLE
diff --git a/keyboards/evyd13/plain60/keymaps/audio/config.h b/keyboards/evyd13/plain60/keymaps/audio/config.h
index 9a43b7fbe..50309173b 100644
--- a/keyboards/evyd13/plain60/keymaps/audio/config.h
+++ b/keyboards/evyd13/plain60/keymaps/audio/config.h
@@ -1,3 +1,3 @@
 #pragma once
-#define B7_AUDIO
+#define AUDIO_PIN B7
diff --git a/keyboards/flehrad/bigswitch/keymaps/wanleg/config.h b/keyboards/flehrad/bigswitch/keymaps/wanleg/config.h
index 54abb9a6c..bb638ce59 100644
--- a/keyboards/flehrad/bigswitch/keymaps/wanleg/config.h
+++ b/keyboards/flehrad/bigswitch/keymaps/wanleg/config.h
@@ -39,4 +39,4 @@
 #define QMK_LED B0
 // set audio pin
-#define C6_AUDIO
+#define AUDIO_PIN C6
diff --git a/keyboards/hadron/ver3/config.h b/keyboards/hadron/ver3/config.h
index f76ca4060..8c04575ee 100644
--- a/keyboards/hadron/ver3/config.h
+++ b/keyboards/hadron/ver3/config.h
@@ -50,7 +50,11 @@
 //Audio
 #undef AUDIO_VOICES
-#undef C6_AUDIO
+#undef AUDIO_PIN
+#define AUDIO_PIN A5
+#define AUDIO_PIN_ALT A4
+#define AUDIO_PIN_ALT_AS_NEGATIVE
 #ifdef AUDIO_ENABLE
    #define STARTUP_SONG SONG(PLANCK_SOUND)
diff --git a/keyboards/handwired/aranck/config.h b/keyboards/handwired/aranck/config.h
index 5356feb1e..7d0ab25fe 100644
--- a/keyboards/handwired/aranck/config.h
+++ b/keyboards/handwired/aranck/config.h
@@ -101,7 +101,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /**
 * Aranck-specific definitions
 */
-#define B5_AUDIO
+#define AUDIO_PIN B5
 /**
 * Aranck-specific definitions END
 */
diff --git a/keyboards/handwired/dactyl_manuform/5x6_right_trackball/config.h b/keyboards/handwired/dactyl_manuform/5x6_right_trackball/config.h
index 6d89314a2..d18f08e40 100644
--- a/keyboards/handwired/dactyl_manuform/5x6_right_trackball/config.h
+++ b/keyboards/handwired/dactyl_manuform/5x6_right_trackball/config.h
@@ -61,7 +61,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define BOOTMAGIC_LITE_ROW_RIGHT 6
 #define BOOTMAGIC_LITE_COLUMN_RIGHT 5
-#define C6_AUDIO
+#define AUDIO_PIN C6
 #define DYNAMIC_KEYMAP_EEPROM_MAX_ADDR 4095
 #define DYNAMIC_KEYMAP_LAYER_COUNT 16
diff --git a/keyboards/handwired/heisenberg/config.h b/keyboards/handwired/heisenberg/config.h
index 9fe2ec879..ba35f24ac 100644
--- a/keyboards/handwired/heisenberg/config.h
+++ b/keyboards/handwired/heisenberg/config.h
@@ -101,7 +101,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /**
 * Heisenberg-specific definitions
 */
-#define B5_AUDIO
+#define AUDIO_PIN B5
 /**
 * Heisenberg-specific definitions END
 */
diff --git a/keyboards/handwired/ibm122m/config.h b/keyboards/handwired/ibm122m/config.h
index e0e95d6d3..bd1fdc97d 100644
--- a/keyboards/handwired/ibm122m/config.h
+++ b/keyboards/handwired/ibm122m/config.h
@@ -24,7 +24,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define PRODUCT_ID      0x0000
 #define DEVICE_VER      0x0001
 #define MANUFACTURER    IBM
-#define PRODUCT         IBM Model M 122 key 
+#define PRODUCT         IBM Model M 122 key
 /* key matrix size */
 #define MATRIX_ROWS 8
@@ -102,8 +102,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
-#define B6_AUDIO
+#define AUDIO_PIN_ALT B6
-#define C6_AUDIO
+#define AUDIO_PIN C6
 /* control how magic key switches layers */
 //#define MAGIC_KEY_SWITCH_LAYER_WITH_FKEYS  true
diff --git a/keyboards/handwired/xealous/config.h b/keyboards/handwired/xealous/config.h
index 251e85d4c..5c1469b1f 100644
--- a/keyboards/handwired/xealous/config.h
+++ b/keyboards/handwired/xealous/config.h
@@ -34,10 +34,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifdef AUDIO_ENABLE
-  #define C6_AUDIO
+  #define AUDIO_PIN C6
  #define STARTUP_SONG SONG(STARTUP_SOUND)
  #define NO_MUSIC_MODE
  #define TONE_QWERTY SONG(Q__NOTE(_E4));
  #define TONE_NUMPAD SONG(Q__NOTE(_D4));
 #endif
diff --git a/keyboards/helix/pico/config.h b/keyboards/helix/pico/config.h
index 3938db30e..b01fd3a00 100644
--- a/keyboards/helix/pico/config.h
+++ b/keyboards/helix/pico/config.h
@@ -77,7 +77,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Audio */
 #ifdef AUDIO_ENABLE
-  #define B5_AUDIO
+  #define AUDIO_PIN B5
 #endif
 /* ws2812 RGB LED */
diff --git a/keyboards/hp69/config.h b/keyboards/hp69/config.h
index ca0a9eb47..06dd57145 100644
--- a/keyboards/hp69/config.h
+++ b/keyboards/hp69/config.h
@@ -48,5 +48,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define RGBLED_NUM 20
 #define RGBLIGHT_ANIMATIONS
-#define A4_AUDIO
+#define AUDIO_PIN A5
-#define A5_AUDIO
-\ No newline at end of file
+#define AUDIO_PIN_ALT A4
+#define AUDIO_PIN_ALT_AS_NEGATIVE
diff --git a/keyboards/jones/v03/config.h b/keyboards/jones/v03/config.h
index 3683a43dd..0ff82e8d3 100644
--- a/keyboards/jones/v03/config.h
+++ b/keyboards/jones/v03/config.h
@@ -57,8 +57,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Audio */
 #ifdef AUDIO_ENABLE
-  #define C6_AUDIO
+  #define AUDIO_PIN C6
-  #define B6_AUDIO  // 2nd pin for simultaneous audio.
+  #define AUDIO_PIN_ALT B6  // 2nd pin for simultaneous audio.
  #define AUDIO_CLICKY
 #endif
diff --git a/keyboards/jones/v03_1/config.h b/keyboards/jones/v03_1/config.h
index a064e5639..c1d6a577f 100644
--- a/keyboards/jones/v03_1/config.h
+++ b/keyboards/jones/v03_1/config.h
@@ -57,8 +57,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Audio */
 #ifdef AUDIO_ENABLE
-  #define C6_AUDIO
+  #define AUDIO_PIN C6
-  #define B7_AUDIO  // 2nd pin for simultaneous audio.
+  #define AUDIO_PIN_ALT B7  // 2nd pin for simultaneous audio.
  #define AUDIO_CLICKY
 #endif
diff --git a/keyboards/keebio/iris/keymaps/blucky/config.h b/keyboards/keebio/iris/keymaps/blucky/config.h
index 213445dd3..f187addbd 100644
--- a/keyboards/keebio/iris/keymaps/blucky/config.h
+++ b/keyboards/keebio/iris/keymaps/blucky/config.h
@@ -1,5 +1,5 @@
 /*
-Copyright 2019 Brian Luckenbill 
+Copyright 2019 Brian Luckenbill
 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -17,7 +17,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #pragma once
-#define C6_AUDIO
+#define AUDIO_PIN C6
 #undef  RGBLED_NUM
 #define RGBLED_NUM                  12
diff --git a/keyboards/keebio/iris/keymaps/broswen/config.h b/keyboards/keebio/iris/keymaps/broswen/config.h
index 19c47780d..fcfbfe8cf 100644
--- a/keyboards/keebio/iris/keymaps/broswen/config.h
+++ b/keyboards/keebio/iris/keymaps/broswen/config.h
@@ -32,7 +32,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define RGBLIGHT_HUE_STEP 5
 #define RGBLIGHT_SAT_STEP 8
 #define RGBLIGHT_VAL_STEP 8
-#define C6_AUDIO
+#define AUDIO_PIN C6
 #define NO_MUSIC_MODE
diff --git a/keyboards/keebio/iris/keymaps/drashna/config.h b/keyboards/keebio/iris/keymaps/drashna/config.h
index 63f87b7c4..f68166c98 100644
--- a/keyboards/keebio/iris/keymaps/drashna/config.h
+++ b/keyboards/keebio/iris/keymaps/drashna/config.h
@@ -43,7 +43,7 @@
 #endif  // RGBLIGHT_ENABLE
 #ifdef AUDIO_ENABLE
-#    define C6_AUDIO
+#    define AUDIO_PIN C6
 #    ifdef RGBLIGHT_ENABLE
 #        ifndef __arm__
 #            define NO_MUSIC_MODE
diff --git a/keyboards/keebio/iris/keymaps/mtdjr/config.h b/keyboards/keebio/iris/keymaps/mtdjr/config.h
index 93dc4c211..9adb6d627 100644
--- a/keyboards/keebio/iris/keymaps/mtdjr/config.h
+++ b/keyboards/keebio/iris/keymaps/mtdjr/config.h
@@ -34,7 +34,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // #define AUDIO_CLICKY
 // #define AUDIO_CLICKY_ON
-// #define C6_AUDIO
+// #define AUDIO_PIN C6
 // #define AUDIO_CLICKY_FREQ_RANDOMNESS 0.1f
 // #define AUDIO_CLICKY_FREQ_MAX 100.0f
diff --git a/keyboards/keebio/iris/keymaps/pvinis/config.h b/keyboards/keebio/iris/keymaps/pvinis/config.h
index 9574f2a83..c2870eba0 100644
--- a/keyboards/keebio/iris/keymaps/pvinis/config.h
+++ b/keyboards/keebio/iris/keymaps/pvinis/config.h
@@ -16,7 +16,7 @@
 // Choose pin to use for audio. C6 is the one iris uses.
 #ifdef AUDIO_ENABLE
-#    define C6_AUDIO
+#    define AUDIO_PIN C6
 #    define STARTUP_SONG SONG(NO_SOUND)  // No startup song.
 #endif
diff --git a/keyboards/keebio/levinson/keymaps/issmirnov/config.h b/keyboards/keebio/levinson/keymaps/issmirnov/config.h
index 89c2f5ebe..2f0fbaf33 100644
--- a/keyboards/keebio/levinson/keymaps/issmirnov/config.h
+++ b/keyboards/keebio/levinson/keymaps/issmirnov/config.h
@@ -29,6 +29,6 @@
 #ifdef AUDIO_ENABLE
   #define QMK_SPEAKER C6
-   #define C6_AUDIO
+   #define AUDIO_PIN C6
   #define NO_MUSIC_MODE // Save 2000 bytes
 #endif
diff --git a/keyboards/keebio/quefrency/keymaps/drashna_ms/config.h b/keyboards/keebio/quefrency/keymaps/drashna_ms/config.h
index 089c8cf79..80a3cb877 100644
--- a/keyboards/keebio/quefrency/keymaps/drashna_ms/config.h
+++ b/keyboards/keebio/quefrency/keymaps/drashna_ms/config.h
@@ -35,6 +35,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #endif
 #ifdef AUDIO_ENABLE
-    #define B7_AUDIO
+    #define AUDIO_PIN B7
    #define AUDIO_CLICKY
 #endif
diff --git a/keyboards/keebio/viterbi/keymaps/drashna/config.h b/keyboards/keebio/viterbi/keymaps/drashna/config.h
index 5d7ffa8a1..2decb3b3e 100644
--- a/keyboards/keebio/viterbi/keymaps/drashna/config.h
+++ b/keyboards/keebio/viterbi/keymaps/drashna/config.h
@@ -34,7 +34,7 @@
 #define PRODUCT Drashnas Viterbi Macro Pad
 #ifdef AUDIO_ENABLE
-#    define C6_AUDIO
+#    define AUDIO_PIN C6
 #    define NO_MUSIC_MODE
 #endif
diff --git a/keyboards/keysofkings/twokey/config.h b/keyboards/keysofkings/twokey/config.h
index d7f4c3cf0..9b77fa73e 100755
--- a/keyboards/keysofkings/twokey/config.h
+++ b/keyboards/keysofkings/twokey/config.h
@@ -1,18 +1,18 @@
 /* Copyright 2020 Keys of Kings
-  * 
+  *
-  * This program is free software: you can redistribute it and/or modify 
+  * This program is free software: you can redistribute it and/or modify
-  * it under the terms of the GNU General Public License as published by 
+  * it under the terms of the GNU General Public License as published by
-  * the Free Software Foundation, either version 2 of the License, or 
+  * the Free Software Foundation, either version 2 of the License, or
-  * (at your option) any later version. 
+  * (at your option) any later version.
-  * 
+  *
-  * This program is distributed in the hope that it will be useful, 
+  * This program is distributed in the hope that it will be useful,
-  * but WITHOUT ANY WARRANTY; without even the implied warranty of 
+  * but WITHOUT ANY WARRANTY; without even the implied warranty of
-  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
+  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  * GNU General Public License for more details. 
+  * GNU General Public License for more details.
-  * 
+  *
-  * You should have received a copy of the GNU General Public License 
+  * You should have received a copy of the GNU General Public License
-  * along with this program.  If not, see <http://www.gnu.org/licenses/>. 
+  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
-  */ 
+  */
 #pragma once
@@ -59,7 +59,7 @@
 #define RGBLIGHT_HUE_STEP 4
 #define RGBLIGHT_SAT_STEP 4
 #define RGBLIGHT_VAL_STEP 4
-#define B6_AUDIO
+#define AUDIO_PIN B6
 #define AUDIO_CLICKY
 #endif
diff --git a/keyboards/knops/mini/keymaps/mverteuil/config.h b/keyboards/knops/mini/keymaps/mverteuil/config.h
index f72145c5a..584296cfa 100644
--- a/keyboards/knops/mini/keymaps/mverteuil/config.h
+++ b/keyboards/knops/mini/keymaps/mverteuil/config.h
@@ -18,8 +18,8 @@
 #if defined(AUDIO_ENABLE)
    #define AUDIO_CLICKY
-    #define B5_AUDIO
+    #define AUDIO_PIN_ALT B5
-    #define C6_AUDIO
+    #define AUDIO_PIN C6
    #define STARTUP_SONG SONG(ZELDA_PUZZLE)
    #define GOODBYE_SONG SONG(COIN_SOUND)
 #endif
diff --git a/keyboards/launchpad/keymaps/drashna/config.h b/keyboards/launchpad/keymaps/drashna/config.h
index 212b1da80..b14becc25 100644
--- a/keyboards/launchpad/keymaps/drashna/config.h
+++ b/keyboards/launchpad/keymaps/drashna/config.h
@@ -27,5 +27,5 @@
 #define RGBLIGHT_VAL_STEP 17
 #define DRIVER_LED_TOTAL RGBLED_NUM
-#define B7_AUDIO
+#define AUDIO_PIN B7
 #define AUDIO_CLICKY
diff --git a/keyboards/lets_split/sockets/config.h b/keyboards/lets_split/sockets/config.h
index 4315ce24f..67fa4b4cc 100644
--- a/keyboards/lets_split/sockets/config.h
+++ b/keyboards/lets_split/sockets/config.h
@@ -61,7 +61,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Audio settings */
 #ifdef AUDIO_ENABLE
-    #define C6_AUDIO // Define this to enable the buzzer
+    #define AUDIO_PIN C6 // Define this to enable the buzzer
 #endif
 /*
diff --git a/keyboards/lfkeyboards/lfk78/config.h b/keyboards/lfkeyboards/lfk78/config.h
index 5a855b07c..2b0b01d86 100644
--- a/keyboards/lfkeyboards/lfk78/config.h
+++ b/keyboards/lfkeyboards/lfk78/config.h
@@ -39,7 +39,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define TAPPING_TERM 200
-#define C6_AUDIO
+#define AUDIO_PIN C6
 #define AUDIO_VOICES
 #define RGB_DI_PIN C7 // Have to set it to something to get the ws2812 code to compile
diff --git a/keyboards/lfkeyboards/lfk87/config.h b/keyboards/lfkeyboards/lfk87/config.h
index 118c135aa..c03059092 100644
--- a/keyboards/lfkeyboards/lfk87/config.h
+++ b/keyboards/lfkeyboards/lfk87/config.h
@@ -50,7 +50,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #endif
 #define AUDIO_VOICES
-#define C6_AUDIO
+#define AUDIO_PIN C6
 #define BACKLIGHT_LEVELS 10
 #define BACKLIGHT_PWM_MAP {2, 4, 8, 16, 40, 55, 70, 128, 200, 255}
diff --git a/keyboards/lfkeyboards/mini1800/config.h b/keyboards/lfkeyboards/mini1800/config.h
index a6cd675dd..b8c0f2b67 100644
--- a/keyboards/lfkeyboards/mini1800/config.h
+++ b/keyboards/lfkeyboards/mini1800/config.h
@@ -37,7 +37,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
    #define RGBLED_NUM 26     // Number of LEDs
 #define AUDIO_VOICES
-#define C6_AUDIO
+#define AUDIO_PIN C6
 #define BACKLIGHT_LEVELS 10
 #define BACKLIGHT_PWM_MAP {2, 4, 8, 16, 40, 55, 70, 128, 200, 255}
diff --git a/keyboards/lfkeyboards/smk65/revb/config.h b/keyboards/lfkeyboards/smk65/revb/config.h
index 0d4fe40f3..924a04fd9 100644
--- a/keyboards/lfkeyboards/smk65/revb/config.h
+++ b/keyboards/lfkeyboards/smk65/revb/config.h
@@ -43,8 +43,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //RevB only:
 #define AUDIO_VOICES
-#define C6_AUDIO
+#define AUDIO_PIN C6
-// #define B5_AUDIO
 #define BACKLIGHT_LEVELS 8
 #define BACKLIGHT_PWM_MAP {8, 16, 40, 55, 70, 128, 200, 255}
diff --git a/keyboards/meira/featherble/config.h b/keyboards/meira/featherble/config.h
index c6c63556d..e8db87acb 100644
--- a/keyboards/meira/featherble/config.h
+++ b/keyboards/meira/featherble/config.h
@@ -37,7 +37,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define UNUSED_PINS
 #define QMK_SPEAKER B5
-#define B5_AUDIO
+#define AUDIO_PIN B5
 #define AUDIO_VOICES
 // #define BACKLIGHT_PIN B7
diff --git a/keyboards/meira/keymaps/grahampheath/config.h b/keyboards/meira/keymaps/grahampheath/config.h
index fcc5e4f13..604f37846 100644
--- a/keyboards/meira/keymaps/grahampheath/config.h
+++ b/keyboards/meira/keymaps/grahampheath/config.h
@@ -21,7 +21,7 @@
 // place overrides here
 #define MUSIC_MASK (keycode != KC_NO)
-#define C6_AUDIO
+#define AUDIO_PIN C6
 #ifdef AUDIO_ENABLE
    #define STARTUP_SONG SONG(PLANCK_SOUND)
    // #define STARTUP_SONG SONG(NO_SOUND)
diff --git a/keyboards/mitosis/keymaps/datagrok/config.h b/keyboards/mitosis/keymaps/datagrok/config.h
index 0e82b628b..5f37d27e6 100644
--- a/keyboards/mitosis/keymaps/datagrok/config.h
+++ b/keyboards/mitosis/keymaps/datagrok/config.h
@@ -36,7 +36,7 @@
        }
 #define AUDIO_VOICES
 #define AUDIO_CLICKY
-#define C6_AUDIO
+#define AUDIO_PIN C6
 #endif
 #endif
diff --git a/keyboards/mitosis/keymaps/mjt/config.h b/keyboards/mitosis/keymaps/mjt/config.h
index 71adc5a2d..830cbc9e0 100644
--- a/keyboards/mitosis/keymaps/mjt/config.h
+++ b/keyboards/mitosis/keymaps/mjt/config.h
@@ -15,7 +15,7 @@
 #endif
 #define AUDIO_VOICES
-#define C6_AUDIO
+#define AUDIO_PIN C6
 // fix iPhone power adapter issue
 #define USB_MAX_POWER_CONSUMPTION 50
diff --git a/keyboards/moonlander/config.h b/keyboards/moonlander/config.h
index d1c685280..c88feea3d 100644
--- a/keyboards/moonlander/config.h
+++ b/keyboards/moonlander/config.h
@@ -101,3 +101,7 @@
 #    define DYNAMIC_KEYMAP_EEPROM_MAX_ADDR 16383
 #    define DYNAMIC_KEYMAP_LAYER_COUNT 32
 #endif
+#define AUDIO_PIN A5
+#define AUDIO_PIN_ALT A4
+#define AUDIO_PIN_ALT_AS_NEGATIVE
diff --git a/keyboards/mschwingen/modelm/config.h b/keyboards/mschwingen/modelm/config.h
index 07881cd21..2b42bb38e 100644
--- a/keyboards/mschwingen/modelm/config.h
+++ b/keyboards/mschwingen/modelm/config.h
@@ -87,5 +87,5 @@
 #define RGBLED_NUM 3
 // disabled, needs PCB patch.
-//#define C6_AUDIO
+//#define AUDIO_PIN C6
 //#define NO_MUSIC_MODE
diff --git a/keyboards/nack/config.h b/keyboards/nack/config.h
index 9f0880e38..e442a1333 100644
--- a/keyboards/nack/config.h
+++ b/keyboards/nack/config.h
@@ -13,7 +13,7 @@ GNU General Public License for more details.
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/ 
+*/
 #pragma once
 #include "config_common.h"
@@ -27,7 +27,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define MATRIX_ROWS 4
 #define MATRIX_COLS 13
-#define MATRIX_ROW_PINS { A0, A1, A2, A3 }      
+#define MATRIX_ROW_PINS { A0, A1, A2, A3 }
 #define MATRIX_COL_PINS { A6, A7, A8, A9, A10, B0, B1, B2, B6, B7, C13, C14, C15 }
 #define DIODE_DIRECTION ROW2COL
@@ -40,7 +40,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
    #define RGB_DI_PIN B5
    #define RGBLED_NUM 52
    #define DRIVER_LED_TOTAL RGBLED_NUM
-    #define RGB_MATRIX_MAXIMUM_BRIGHTNESS 128 // Max brightness of LEDs 
+    #define RGB_MATRIX_MAXIMUM_BRIGHTNESS 128 // Max brightness of LEDs
    #define RGB_MATRIX_STARTUP_VAL 64
    #define RGB_MATRIX_HUE_STEP 10
    #define RGB_MATRIX_SAT_STEP 10
@@ -49,11 +49,11 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #ifdef AUDIO_ENABLE
    #define STARTUP_SONG SONG(NO_SOUND)
-    #define AUDIO_PIN A4 // Pin of the left speaker 
+    #define AUDIO_PIN A5
-    #define AUDIO_PIN_ALT A5 // Pin of the right speaker
+    #define AUDIO_PIN_ALT A4
-    /* 
+    #define AUDIO_PIN_ALT_AS_NEGATIVE
+    /*
     * Basically, change this section once pull request 6165 has been merged
     * https://github.com/qmk/qmk_firmware/pull/6165
     */
 #endif
diff --git a/keyboards/nightly_boards/n40_o/config.h b/keyboards/nightly_boards/n40_o/config.h
index e0bcdbe01..a5257cc49 100644
--- a/keyboards/nightly_boards/n40_o/config.h
+++ b/keyboards/nightly_boards/n40_o/config.h
@@ -66,7 +66,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Audio */
-#define B7_AUDIO
+#define AUDIO_PIN B7
 #define AUDIO_CLICKY
@@ -80,5 +80,3 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define LOCKING_SUPPORT_ENABLE
 /* Locking resynchronize hack */
 #define LOCKING_RESYNC_ENABLE
diff --git a/keyboards/nightly_boards/n87/config.h b/keyboards/nightly_boards/n87/config.h
index 890276c30..0315119d8 100644
--- a/keyboards/nightly_boards/n87/config.h
+++ b/keyboards/nightly_boards/n87/config.h
@@ -84,7 +84,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //   #define RGBLIGHT_EFFECT_BREATHE_MAX    255   // 0 to 255
 #endif
-#define B7_AUDIO
+#define AUDIO_PIN B7
 #define AUDIO_CLICKY
diff --git a/keyboards/nightly_boards/octopad/config.h b/keyboards/nightly_boards/octopad/config.h
index 1477ce93e..ee417644d 100644
--- a/keyboards/nightly_boards/octopad/config.h
+++ b/keyboards/nightly_boards/octopad/config.h
@@ -66,7 +66,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Audio */
-#define B5_AUDIO
+#define AUDIO_PIN B5
 #define AUDIO_CLICKY
 #define NO_MUSIC_MODE
diff --git a/keyboards/orthodox/keymaps/drashna/config.h b/keyboards/orthodox/keymaps/drashna/config.h
index 585c91640..e3a89bce6 100644
--- a/keyboards/orthodox/keymaps/drashna/config.h
+++ b/keyboards/orthodox/keymaps/drashna/config.h
@@ -50,7 +50,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #endif  // RGBLIGHT_ENABLE
 #ifdef AUDIO_ENABLE
-#    define C6_AUDIO
+#    define AUDIO_PIN C6
 #    ifdef RGBLIGHT_ENABLE
 #        define NO_MUSIC_MODE
 #    endif
diff --git a/keyboards/planck/config.h b/keyboards/planck/config.h
index c8cbd7494..f7dce7020 100644
--- a/keyboards/planck/config.h
+++ b/keyboards/planck/config.h
@@ -41,7 +41,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define QMK_SPEAKER C6
 #define AUDIO_VOICES
-#define C6_AUDIO
+#define AUDIO_PIN C6
 #define BACKLIGHT_PIN B7
diff --git a/keyboards/planck/ez/config.h b/keyboards/planck/ez/config.h
index ecab5d5dc..7f8876496 100644
--- a/keyboards/planck/ez/config.h
+++ b/keyboards/planck/ez/config.h
@@ -56,7 +56,10 @@
 #define MUSIC_MAP
 #undef AUDIO_VOICES
-#undef C6_AUDIO
+#undef AUDIO_PIN
+#define AUDIO_PIN A5
+#define AUDIO_PIN_ALT A4
+#define AUDIO_PIN_ALT_AS_NEGATIVE
 /* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
 // #define DEBOUNCE 6
diff --git a/keyboards/planck/keymaps/dodger/config.h b/keyboards/planck/keymaps/dodger/config.h
index 2f94edb01..38af37bc0 100644
--- a/keyboards/planck/keymaps/dodger/config.h
+++ b/keyboards/planck/keymaps/dodger/config.h
@@ -41,7 +41,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define QMK_SPEAKER C6
 #define AUDIO_VOICES
-#define C6_AUDIO
+#define AUDIO_PIN C6
 #define BACKLIGHT_PIN B7
diff --git a/keyboards/planck/keymaps/synth_sample/config.h b/keyboards/planck/keymaps/synth_sample/config.h
new file mode 100644
index 000000000..930b26b00
--- /dev/null
+++ b/keyboards/planck/keymaps/synth_sample/config.h
@@ -0,0 +1,56 @@
+/*
+Copyright 2020 Jack Humbert
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#pragma once
+#ifdef AUDIO_ENABLE
+    #define AUDIO_PIN A5
+    #define STARTUP_SONG SONG(PLANCK_SOUND)
+    // #define STARTUP_SONG SONG(NO_SOUND)
+    #define DEFAULT_LAYER_SONGS { SONG(QWERTY_SOUND), \
+                                  SONG(COLEMAK_SOUND), \
+                                  SONG(DVORAK_SOUND) \
+                                }
+#endif
+/*
+ * MIDI options
+ */
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+// Most tactile encoders have detents every 4 stages
+#define ENCODER_RESOLUTION 4
diff --git a/keyboards/planck/keymaps/synth_sample/keymap.c b/keyboards/planck/keymaps/synth_sample/keymap.c
new file mode 100644
index 000000000..87a7479ce
--- /dev/null
+++ b/keyboards/planck/keymaps/synth_sample/keymap.c
@@ -0,0 +1,296 @@
+/* Copyright 2019 Jack Humbert
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include QMK_KEYBOARD_H
+enum planck_layers {
+  _QWERTY,
+  _COLEMAK,
+  _DVORAK,
+  _LOWER,
+  _RAISE,
+  _PLOVER,
+  _ADJUST
+};
+enum planck_keycodes {
+  QWERTY = SAFE_RANGE,
+  COLEMAK,
+  DVORAK,
+  PLOVER,
+  BACKLIT,
+  EXT_PLV
+};
+#define LOWER MO(_LOWER)
+#define RAISE MO(_RAISE)
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+/* Qwerty
+ * ,-----------------------------------------------------------------------------------.
+ * | Tab  |   Q  |   W  |   E  |   R  |   T  |   Y  |   U  |   I  |   O  |   P  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Esc  |   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K  |   L  |   ;  |  "   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | Shift|   Z  |   X  |   C  |   V  |   B  |   N  |   M  |   ,  |   .  |   /  |Enter |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Brite| Ctrl | Alt  | GUI  |Lower |    Space    |Raise | Left | Down |  Up  |Right |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_QWERTY] = LAYOUT_planck_grid(
+    KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC,
+    KC_ESC,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,
+    KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT ,
+    BACKLIT, KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT
+),
+/* Colemak
+ * ,-----------------------------------------------------------------------------------.
+ * | Tab  |   Q  |   W  |   F  |   P  |   G  |   J  |   L  |   U  |   Y  |   ;  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Esc  |   A  |   R  |   S  |   T  |   D  |   H  |   N  |   E  |   I  |   O  |  "   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | Shift|   Z  |   X  |   C  |   V  |   B  |   K  |   M  |   ,  |   .  |   /  |Enter |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Brite| Ctrl | Alt  | GUI  |Lower |    Space    |Raise | Left | Down |  Up  |Right |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_COLEMAK] = LAYOUT_planck_grid(
+    KC_TAB,  KC_Q,    KC_W,    KC_F,    KC_P,    KC_G,    KC_J,    KC_L,    KC_U,    KC_Y,    KC_SCLN, KC_BSPC,
+    KC_ESC,  KC_A,    KC_R,    KC_S,    KC_T,    KC_D,    KC_H,    KC_N,    KC_E,    KC_I,    KC_O,    KC_QUOT,
+    KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_K,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT ,
+    BACKLIT, KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT
+),
+/* Dvorak
+ * ,-----------------------------------------------------------------------------------.
+ * | Tab  |   "  |   ,  |   .  |   P  |   Y  |   F  |   G  |   C  |   R  |   L  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Esc  |   A  |   O  |   E  |   U  |   I  |   D  |   H  |   T  |   N  |   S  |  /   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | Shift|   ;  |   Q  |   J  |   K  |   X  |   B  |   M  |   W  |   V  |   Z  |Enter |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Brite| Ctrl | Alt  | GUI  |Lower |    Space    |Raise | Left | Down |  Up  |Right |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_DVORAK] = LAYOUT_planck_grid(
+    KC_TAB,  KC_QUOT, KC_COMM, KC_DOT,  KC_P,    KC_Y,    KC_F,    KC_G,    KC_C,    KC_R,    KC_L,    KC_BSPC,
+    KC_ESC,  KC_A,    KC_O,    KC_E,    KC_U,    KC_I,    KC_D,    KC_H,    KC_T,    KC_N,    KC_S,    KC_SLSH,
+    KC_LSFT, KC_SCLN, KC_Q,    KC_J,    KC_K,    KC_X,    KC_B,    KC_M,    KC_W,    KC_V,    KC_Z,    KC_ENT ,
+    BACKLIT, KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT
+),
+/* Lower
+ * ,-----------------------------------------------------------------------------------.
+ * |   ~  |   !  |   @  |   #  |   $  |   %  |   ^  |   &  |   *  |   (  |   )  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Del  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   _  |   +  |   {  |   }  |  |   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |ISO ~ |ISO | | Home | End  |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_LOWER] = LAYOUT_planck_grid(
+    KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR,    KC_ASTR,    KC_LPRN, KC_RPRN, KC_BSPC,
+    KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_UNDS,    KC_PLUS,    KC_LCBR, KC_RCBR, KC_PIPE,
+    _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  S(KC_NUHS), S(KC_NUBS), KC_HOME, KC_END,  _______,
+    _______, _______, _______, _______, _______, _______, _______, _______,    KC_MNXT,    KC_VOLD, KC_VOLU, KC_MPLY
+),
+/* Raise
+ * ,-----------------------------------------------------------------------------------.
+ * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Del  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   -  |   =  |   [  |   ]  |  \   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |ISO # |ISO / |Pg Up |Pg Dn |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_RAISE] = LAYOUT_planck_grid(
+    KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_BSPC,
+    KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, KC_BSLS,
+    _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_NUHS, KC_NUBS, KC_PGUP, KC_PGDN, _______,
+    _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY
+),
+/* Plover layer (http://opensteno.org)
+ * ,-----------------------------------------------------------------------------------.
+ * |   #  |   #  |   #  |   #  |   #  |   #  |   #  |   #  |   #  |   #  |   #  |   #  |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |   S  |   T  |   P  |   H  |   *  |   *  |   F  |   P  |   L  |   T  |   D  |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |   S  |   K  |   W  |   R  |   *  |   *  |   R  |   B  |   G  |   S  |   Z  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Exit |      |      |   A  |   O  |             |   E  |   U  |      |      |      |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_PLOVER] = LAYOUT_planck_grid(
+    KC_1,    KC_1,    KC_1,    KC_1,    KC_1,    KC_1,    KC_1,    KC_1,    KC_1,    KC_1,    KC_1,    KC_1   ,
+    XXXXXXX, KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC,
+    XXXXXXX, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,
+    EXT_PLV, XXXXXXX, XXXXXXX, KC_C,    KC_V,    XXXXXXX, XXXXXXX, KC_N,    KC_M,    XXXXXXX, XXXXXXX, XXXXXXX
+),
+/* Adjust (Lower + Raise)
+ * ,-----------------------------------------------------------------------------------.
+ * |      | Reset|      |      |      |      |      |      |      |      |      |  Del |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |      |      |Aud on|Audoff|AGnorm|AGswap|Qwerty|Colemk|Dvorak|Plover|      |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |Voice-|Voice+|Mus on|Musoff|MIDIon|MIDIof|      |      |      |      |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      |      |      |      |      |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_ADJUST] = LAYOUT_planck_grid(
+    _______, RESET,   DEBUG,   RGB_TOG, RGB_MOD, RGB_HUI, RGB_HUD, RGB_SAI, RGB_SAD,  RGB_VAI, RGB_VAD, KC_DEL ,
+    _______, _______, MU_MOD,  AU_ON,   AU_OFF,  AG_NORM, AG_SWAP, QWERTY,  COLEMAK,  DVORAK,  PLOVER,  _______,
+    _______, MUV_DE,  MUV_IN,  MU_ON,   MU_OFF,  MI_ON,   MI_OFF,  TERM_ON, TERM_OFF, _______, _______, _______,
+    _______, _______, _______, _______, _______, _______, _______, _______, _______,  _______, _______, _______
+)
+};
+#ifdef AUDIO_ENABLE
+  float plover_song[][2]     = SONG(PLOVER_SOUND);
+  float plover_gb_song[][2]  = SONG(PLOVER_GOODBYE_SOUND);
+#endif
+uint32_t layer_state_set_user(uint32_t state) {
+  return update_tri_layer_state(state, _LOWER, _RAISE, _ADJUST);
+}
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  switch (keycode) {
+    case QWERTY:
+      if (record->event.pressed) {
+        print("mode just switched to qwerty and this is a huge string\n");
+        set_single_persistent_default_layer(_QWERTY);
+      }
+      return false;
+      break;
+    case COLEMAK:
+      if (record->event.pressed) {
+        set_single_persistent_default_layer(_COLEMAK);
+      }
+      return false;
+      break;
+    case DVORAK:
+      if (record->event.pressed) {
+        set_single_persistent_default_layer(_DVORAK);
+      }
+      return false;
+      break;
+    case BACKLIT:
+      if (record->event.pressed) {
+        register_code(KC_RSFT);
+        #ifdef BACKLIGHT_ENABLE
+          backlight_step();
+        #endif
+        #ifdef KEYBOARD_planck_rev5
+          PORTE &= ~(1<<6);
+        #endif
+      } else {
+        unregister_code(KC_RSFT);
+        #ifdef KEYBOARD_planck_rev5
+          PORTE |= (1<<6);
+        #endif
+      }
+      return false;
+      break;
+    case PLOVER:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          stop_all_notes();
+          PLAY_SONG(plover_song);
+        #endif
+        layer_off(_RAISE);
+        layer_off(_LOWER);
+        layer_off(_ADJUST);
+        layer_on(_PLOVER);
+        if (!eeconfig_is_enabled()) {
+            eeconfig_init();
+        }
+        keymap_config.raw = eeconfig_read_keymap();
+        keymap_config.nkro = 1;
+        eeconfig_update_keymap(keymap_config.raw);
+      }
+      return false;
+      break;
+    case EXT_PLV:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          PLAY_SONG(plover_gb_song);
+        #endif
+        layer_off(_PLOVER);
+      }
+      return false;
+      break;
+  }
+  return true;
+}
+void encoder_update(bool clockwise) {
+    if (clockwise) {
+      #ifdef MOUSEKEY_ENABLE
+        register_code(KC_MS_WH_DOWN);
+        unregister_code(KC_MS_WH_DOWN);
+      #else
+        register_code(KC_PGDN);
+        unregister_code(KC_PGDN);
+      #endif
+    } else {
+      #ifdef MOUSEKEY_ENABLE
+        register_code(KC_MS_WH_UP);
+        unregister_code(KC_MS_WH_UP);
+      #else
+        register_code(KC_PGUP);
+        unregister_code(KC_PGUP);
+      #endif
+    }
+}
+void matrix_scan_user(void) {
+}
+bool music_mask_user(uint16_t keycode) {
+  switch (keycode) {
+    case RAISE:
+    case LOWER:
+      return false;
+    default:
+      return true;
+  }
+}
+#include "sample.h"
+uint32_t dac_sample_custom_counter = 0;
+uint16_t dac_value_generate(void) {
+  if (is_playing_note()) {
+    uint16_t sample = dac_sample_custom[dac_sample_custom_counter];
+    dac_sample_custom_counter = (dac_sample_custom_counter + 1) % AUDIO_DAC_SAMPLE_CUSTOM_LENGTH;
+    return sample;
+  } else {
+    return AUDIO_DAC_OFF_VALUE;
+  }
+}
diff --git a/keyboards/planck/keymaps/synth_sample/rules.mk b/keyboards/planck/keymaps/synth_sample/rules.mk
new file mode 100644
index 000000000..ebfcda221
--- /dev/null
+++ b/keyboards/planck/keymaps/synth_sample/rules.mk
@@ -0,0 +1,2 @@
+AUDIO_ENABLE = yes
+AUDIO_DRIVER = dac_additive
diff --git a/keyboards/planck/keymaps/synth_sample/sample.h b/keyboards/planck/keymaps/synth_sample/sample.h
new file mode 100644
index 000000000..71c1b87e7
--- /dev/null
+++ b/keyboards/planck/keymaps/synth_sample/sample.h
@@ -0,0 +1,3797 @@
+/*
+Copyright 2020 Jack Humbert
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#define AUDIO_DAC_SAMPLE_CUSTOM_LENGTH 30208
+static const dacsample_t dac_sample_custom[30208] = {
+    2041, 2039, 2039, 2037, 2035, 2037, 2037, 2037,
+    2038, 2037, 2037, 2040, 2039, 2038, 2036, 2035,
+    2036, 2036, 2036, 2034, 2034, 2034, 2032, 2032,
+    2033, 2034, 2032, 2030, 2029, 2031, 2030, 2029,
+    2029, 2030, 2029, 2030, 2030, 2031, 2028, 2028,
+    2028, 2027, 2025, 2026, 2027, 2026, 2025, 2026,
+    2026, 2025, 2023, 2022, 2023, 2021, 2021, 2023,
+    2020, 2023, 2023, 2022, 2022, 2021, 2021, 2020,
+    2022, 2020, 2017, 2016, 2015, 2018, 2017, 2015,
+    2013, 2012, 2015, 2013, 2011, 2012, 2011, 2011,
+    2010, 2008, 2008, 2010, 2010, 2006, 2006, 2006,
+    2004, 2005, 2006, 2006, 2005, 2002, 2005, 2003,
+    2003, 2004, 2002, 2001, 2003, 2003, 2002, 2003,
+    2003, 2000, 2000, 2000, 1998, 1997, 1998, 1999,
+    1997, 1995, 1995, 1996, 1996, 1992, 1995, 1995,
+    1994, 1994, 1995, 1997, 1996, 1996, 1997, 1997,
+    1997, 1996, 1996, 1995, 1997, 1997, 1996, 1998,
+    1995, 1996, 1996, 1996, 1996, 1994, 1990, 1991,
+    1992, 1991, 1994, 1992, 1993, 1995, 1994, 1995,
+    1992, 1991, 1991, 1992, 1993, 1992, 1992, 1993,
+    1993, 1992, 1990, 1989, 1991, 1992, 1991, 1991,
+    1990, 1990, 1992, 1992, 1991, 1992, 1992, 1994,
+    1992, 1992, 1992, 1993, 1993, 1994, 1995, 1993,
+    1991, 1992, 1990, 1989, 1990, 1988, 1988, 1987,
+    1989, 1989, 1985, 1986, 1987, 1985, 1986, 1986,
+    1987, 1988, 1988, 1989, 1989, 1988, 1988, 1990,
+    1991, 1991, 1990, 1991, 1992, 1994, 1994, 1995,
+    1994, 1995, 1997, 1995, 1995, 1995, 1997, 1997,
+    1997, 1996, 1999, 2000, 1997, 1998, 1999, 2002,
+    2001, 2001, 2001, 2002, 2000, 1998, 2000, 2004,
+    2002, 2001, 2003, 2005, 2004, 2004, 2002, 2004,
+    2004, 2001, 2000, 2001, 2003, 2005, 2005, 2005,
+    2005, 2006, 2010, 2010, 2009, 2007, 2006, 2008,
+    2006, 2007, 2007, 2005, 2005, 2005, 2007, 2005,
+    2006, 2007, 2009, 2010, 2008, 2007, 2006, 2006,
+    2005, 2005, 2005, 2004, 2005, 2004, 2004, 2003,
+    2007, 2006, 2006, 2004, 2005, 2006, 2007, 2007,
+    2006, 2010, 2007, 2008, 2009, 2012, 2012, 2010,
+    2011, 2010, 2014, 2012, 2013, 2013, 2014, 2014,
+    2013, 2012, 2012, 2012, 2010, 2013, 2012, 2010,
+    2011, 2011, 2012, 2012, 2013, 2013, 2015, 2016,
+    2015, 2015, 2015, 2015, 2015, 2014, 2012, 2014,
+    2016, 2017, 2016, 2015, 2018, 2019, 2017, 2017,
+    2017, 2017, 2016, 2016, 2017, 2017, 2018, 2021,
+    2020, 2019, 2019, 2022, 2022, 2024, 2024, 2023,
+    2023, 2023, 2024, 2025, 2026, 2025, 2024, 2025,
+    2025, 2026, 2026, 2023, 2023, 2023, 2023, 2023,
+    2023, 2024, 2024, 2025, 2024, 2022, 2022, 2021,
+    2021, 2022, 2022, 2024, 2023, 2023, 2023, 2021,
+    2023, 2023, 2024, 2024, 2025, 2024, 2026, 2027,
+    2025, 2026, 2028, 2026, 2027, 2027, 2025, 2024,
+    2027, 2028, 2027, 2028, 2027, 2027, 2028, 2028,
+    2030, 2029, 2032, 2031, 2030, 2029, 2028, 2030,
+    2027, 2028, 2028, 2028, 2026, 2027, 2028, 2027,
+    2029, 2032, 2030, 2030, 2032, 2033, 2030, 2030,
+    2032, 2030, 2030, 2030, 2032, 2032, 2033, 2031,
+    2034, 2032, 2029, 2028, 2028, 2030, 2028, 2029,
+    2030, 2028, 2029, 2029, 2029, 2030, 2032, 2033,
+    2031, 2036, 2034, 2032, 2032, 2031, 2032, 2031,
+    2032, 2033, 2035, 2033, 2032, 2034, 2035, 2036,
+    2037, 2038, 2039, 2038, 2038, 2038, 2040, 2040,
+    2041, 2041, 2041, 2043, 2041, 2041, 2043, 2043,
+    2041, 2040, 2042, 2042, 2042, 2044, 2044, 2041,
+    2042, 2043, 2042, 2044, 2043, 2044, 2044, 2045,
+    2045, 2044, 2045, 2044, 2045, 2043, 2042, 2043,
+    2043, 2043, 2043, 2044, 2044, 2044, 2045, 2044,
+    2044, 2043, 2042, 2045, 2046, 2045, 2046, 2048,
+    2048, 2046, 2046, 2046, 2049, 2048, 2050, 2049,
+    2049, 2050, 2053, 2051, 2049, 2050, 2047, 2050,
+    2048, 2052, 2050, 2051, 2053, 2051, 2051, 2048,
+    2051, 2050, 2049, 2051, 2052, 2051, 2050, 2051,
+    2050, 2050, 2051, 2050, 2048, 2049, 2049, 2048,
+    2050, 2050, 2050, 2049, 2048, 2048, 2048, 2048,
+    2049, 2049, 2049, 2050, 2051, 2050, 2053, 2051,
+    2051, 2053, 2052, 2052, 2052, 2051, 2053, 2055,
+    2056, 2056, 2055, 2056, 2056, 2056, 2059, 2058,
+    2055, 2057, 2059, 2057, 2056, 2056, 2056, 2057,
+    2059, 2060, 2060, 2059, 2059, 2059, 2059, 2061,
+    2059, 2059, 2060, 2061, 2059, 2057, 2058, 2060,
+    2060, 2061, 2060, 2061, 2062, 2063, 2062, 2060,
+    2062, 2060, 2061, 2061, 2060, 2060, 2061, 2062,
+    2062, 2062, 2061, 2059, 2062, 2063, 2062, 2063,
+    2063, 2063, 2063, 2063, 2063, 2063, 2065, 2063,
+    2063, 2065, 2065, 2066, 2065, 2067, 2067, 2066,
+    2065, 2065, 2065, 2066, 2066, 2063, 2064, 2062,
+    2063, 2062, 2062, 2061, 2062, 2063, 2062, 2061,
+    2061, 2062, 2058, 2059, 2061, 2062, 2062, 2062,
+    2062, 2064, 2063, 2063, 2062, 2061, 2061, 2063,
+    2060, 2059, 2059, 2058, 2059, 2059, 2059, 2062,
+    2063, 2063, 2062, 2061, 2061, 2061, 2061, 2062,
+    2060, 2058, 2059, 2060, 2060, 2059, 2059, 2057,
+    2059, 2059, 2056, 2057, 2056, 2057, 2056, 2056,
+    2056, 2057, 2057, 2057, 2055, 2055, 2055, 2053,
+    2054, 2054, 2054, 2054, 2052, 2051, 2054, 2055,
+    2055, 2053, 2055, 2054, 2055, 2055, 2053, 2053,
+    2054, 2052, 2051, 2053, 2051, 2052, 2052, 2054,
+    2054, 2053, 2051, 2051, 2053, 2052, 2051, 2050,
+    2049, 2049, 2048, 2049, 2049, 2047, 2046, 2047,
+    2047, 2047, 2046, 2048, 2046, 2046, 2046, 2044,
+    2043, 2044, 2045, 2046, 2043, 2044, 2043, 2046,
+    2044, 2044, 2043, 2043, 2042, 2039, 2037, 2039,
+    2038, 2039, 2039, 2038, 2038, 2038, 2039, 2036,
+    2034, 2034, 2033, 2035, 2034, 2032, 2031, 2034,
+    2035, 2033, 2034, 2032, 2032, 2033, 2031, 2031,
+    2031, 2032, 2032, 2032, 2030, 2030, 2029, 2029,
+    2029, 2025, 2024, 2024, 2024, 2025, 2025, 2028,
+    2028, 2025, 2024, 2026, 2025, 2022, 2023, 2021,
+    2018, 2019, 2020, 2020, 2020, 2021, 2021, 2018,
+    2017, 2019, 2017, 2016, 2018, 2019, 2018, 2016,
+    2017, 2016, 2014, 2017, 2017, 2017, 2016, 2014,
+    2012, 2011, 2011, 2011, 2011, 2012, 2011, 2009,
+    2011, 2011, 2011, 2012, 2009, 2009, 2010, 2011,
+    2011, 2011, 2008, 2008, 2010, 2009, 2009, 2008,
+    2007, 2010, 2009, 2011, 2012, 2011, 2012, 2012,
+    2010, 2010, 2011, 2009, 2010, 2010, 2010, 2012,
+    2011, 2011, 2011, 2010, 2010, 2009, 2012, 2008,
+    2009, 2010, 2010, 2008, 2008, 2009, 2007, 2007,
+    2007, 2007, 2009, 2008, 2006, 2006, 2010, 2011,
+    2011, 2009, 2010, 2007, 2008, 2007, 2009, 2011,
+    2009, 2009, 2008, 2009, 2009, 2009, 2007, 2010,
+    2008, 2009, 2013, 2011, 2011, 2009, 2010, 2009,
+    2007, 2007, 2008, 2008, 2009, 2010, 2008, 2009,
+    2009, 2010, 2010, 2010, 2009, 2007, 2008, 2007,
+    2011, 2012, 2010, 2009, 2009, 2010, 2008, 2010,
+    2011, 2010, 2010, 2012, 2011, 2010, 2013, 2014,
+    2013, 2014, 2016, 2015, 2016, 2017, 2016, 2020,
+    2022, 2022, 2020, 2022, 2023, 2024, 2023, 2022,
+    2021, 2020, 2023, 2022, 2023, 2022, 2023, 2024,
+    2022, 2021, 2021, 2021, 2021, 2021, 2021, 2023,
+    2024, 2024, 2022, 2022, 2023, 2026, 2027, 2024,
+    2025, 2029, 2027, 2029, 2030, 2029, 2029, 2028,
+    2029, 2029, 2028, 2031, 2031, 2029, 2027, 2026,
+    2026, 2028, 2025, 2025, 2021, 2022, 2025, 2025,
+    2028, 2026, 2025, 2025, 2023, 2024, 2024, 2027,
+    2027, 2029, 2028, 2025, 2027, 2029, 2031, 2028,
+    2026, 2028, 2028, 2028, 2028, 2030, 2026, 2028,
+    2029, 2029, 2030, 2030, 2030, 2032, 2032, 2032,
+    2031, 2030, 2031, 2031, 2033, 2035, 2033, 2032,
+    2031, 2032, 2032, 2032, 2032, 2031, 2030, 2030,
+    2028, 2030, 2029, 2027, 2029, 2028, 2027, 2029,
+    2032, 2031, 2031, 2032, 2030, 2029, 2032, 2033,
+    2032, 2027, 2026, 2029, 2030, 2031, 2033, 2033,
+    2033, 2035, 2035, 2034, 2035, 2034, 2035, 2036,
+    2037, 2035, 2035, 2034, 2034, 2034, 2037, 2036,
+    2035, 2033, 2033, 2034, 2033, 2035, 2035, 2036,
+    2038, 2037, 2035, 2038, 2038, 2033, 2033, 2035,
+    2036, 2036, 2038, 2037, 2037, 2038, 2038, 2039,
+    2039, 2038, 2038, 2040, 2041, 2040, 2042, 2042,
+    2042, 2043, 2042, 2040, 2041, 2040, 2041, 2043,
+    2040, 2042, 2042, 2041, 2044, 2045, 2043, 2043,
+    2045, 2045, 2047, 2045, 2044, 2046, 2045, 2048,
+    2049, 2050, 2050, 2050, 2050, 2048, 2050, 2051,
+    2050, 2050, 2052, 2053, 2053, 2055, 2054, 2053,
+    2055, 2053, 2053, 2052, 2050, 2052, 2052, 2053,
+    2053, 2054, 2053, 2055, 2056, 2055, 2053, 2053,
+    2054, 2054, 2056, 2054, 2054, 2056, 2054, 2053,
+    2054, 2057, 2055, 2054, 2056, 2057, 2056, 2058,
+    2057, 2058, 2059, 2057, 2058, 2057, 2057, 2055,
+    2056, 2056, 2055, 2059, 2057, 2055, 2052, 2050,
+    2053, 2054, 2052, 2053, 2055, 2056, 2055, 2054,
+    2055, 2055, 2053, 2053, 2053, 2054, 2055, 2055,
+    2055, 2052, 2054, 2056, 2057, 2059, 2058, 2055,
+    2056, 2057, 2056, 2056, 2056, 2057, 2057, 2056,
+    2057, 2056, 2057, 2055, 2056, 2057, 2057, 2058,
+    2057, 2055, 2055, 2056, 2057, 2056, 2056, 2056,
+    2057, 2057, 2058, 2058, 2058, 2059, 2057, 2056,
+    2057, 2055, 2053, 2055, 2056, 2056, 2056, 2057,
+    2059, 2058, 2058, 2058, 2057, 2060, 2058, 2058,
+    2058, 2059, 2059, 2060, 2061, 2060, 2058, 2059,
+    2060, 2060, 2058, 2058, 2059, 2058, 2056, 2058,
+    2059, 2059, 2058, 2058, 2057, 2059, 2060, 2058,
+    2058, 2058, 2057, 2059, 2058, 2056, 2061, 2061,
+    2060, 2059, 2061, 2062, 2062, 2062, 2059, 2061,
+    2059, 2058, 2060, 2061, 2058, 2058, 2058, 2059,
+    2059, 2057, 2060, 2058, 2058, 2057, 2055, 2054,
+    2056, 2056, 2059, 2056, 2056, 2059, 2059, 2057,
+    2055, 2052, 2051, 2052, 2052, 2052, 2053, 2051,
+    2052, 2052, 2051, 2050, 2048, 2049, 2050, 2052,
+    2050, 2052, 2051, 2052, 2053, 2052, 2050, 2050,
+    2052, 2051, 2051, 2053, 2052, 2051, 2053, 2055,
+    2055, 2054, 2053, 2054, 2051, 2052, 2052, 2053,
+    2053, 2052, 2052, 2053, 2053, 2049, 2048, 2051,
+    2048, 2048, 2049, 2050, 2051, 2049, 2047, 2047,
+    2049, 2050, 2051, 2049, 2048, 2045, 2045, 2046,
+    2046, 2046, 2045, 2046, 2045, 2043, 2044, 2043,
+    2043, 2043, 2044, 2042, 2042, 2042, 2044, 2046,
+    2044, 2039, 2040, 2039, 2038, 2040, 2040, 2040,
+    2040, 2039, 2039, 2039, 2037, 2036, 2036, 2037,
+    2037, 2034, 2036, 2035, 2034, 2033, 2033, 2031,
+    2029, 2027, 2029, 2028, 2028, 2029, 2030, 2029,
+    2027, 2027, 2026, 2028, 2028, 2026, 2026, 2024,
+    2025, 2028, 2027, 2025, 2026, 2027, 2023, 2018,
+    2017, 2021, 2020, 2019, 2018, 2016, 2014, 2013,
+    2011, 2010, 2007, 2010, 2009, 2006, 2008, 2008,
+    2004, 2005, 2006, 2009, 2009, 2010, 2009, 2007,
+    2007, 2008, 2007, 2006, 2008, 2009, 2008, 2008,
+    2006, 2007, 2009, 2008, 2007, 2007, 2008, 2007,
+    2007, 2009, 2008, 2007, 2008, 2009, 2007, 2006,
+    2005, 2004, 2007, 2006, 2006, 2004, 2004, 2003,
+    2001, 2001, 2002, 2004, 2003, 2003, 2001, 2001,
+    2002, 1998, 2000, 1999, 2000, 2001, 2001, 1999,
+    2000, 1999, 1998, 1998, 2001, 2000, 1998, 1997,
+    1996, 1995, 1994, 1994, 1995, 1995, 1993, 1996,
+    1996, 1994, 1992, 1992, 1993, 1991, 1990, 1989,
+    1991, 1987, 1988, 1989, 1989, 1989, 1992, 1990,
+    1992, 1993, 1992, 1993, 1992, 1990, 1989, 1991,
+    1990, 1990, 1988, 1989, 1991, 1991, 1992, 1991,
+    1994, 1993, 1991, 1991, 1991, 1991, 1989, 1990,
+    1990, 1991, 1989, 1991, 1990, 1991, 1989, 1988,
+    1988, 1987, 1987, 1990, 1990, 1988, 1988, 1988,
+    1988, 1987, 1987, 1984, 1986, 1985, 1986, 1988,
+    1988, 1987, 1987, 1988, 1987, 1988, 1989, 1988,
+    1989, 1991, 1990, 1988, 1990, 1989, 1987, 1987,
+    1987, 1985, 1986, 1987, 1988, 1985, 1987, 1985,
+    1986, 1988, 1988, 1988, 1988, 1987, 1988, 1988,
+    1988, 1988, 1989, 1987, 1988, 1989, 1989, 1991,
+    1990, 1992, 1990, 1990, 1991, 1991, 1993, 1994,
+    1994, 1996, 1993, 1995, 1995, 1998, 1997, 1996,
+    1997, 1997, 1998, 1998, 1997, 1999, 1999, 2000,
+    2001, 2003, 2004, 2004, 2006, 2005, 2003, 2008,
+    2006, 2005, 2005, 2005, 2008, 2009, 2011, 2011,
+    2009, 2008, 2010, 2010, 2012, 2013, 2014, 2015,
+    2015, 2014, 2015, 2015, 2013, 2013, 2013, 2013,
+    2014, 2015, 2018, 2018, 2016, 2016, 2018, 2019,
+    2017, 2015, 2017, 2016, 2016, 2016, 2015, 2017,
+    2018, 2018, 2017, 2016, 2018, 2017, 2019, 2018,
+    2016, 2015, 2014, 2014, 2016, 2018, 2018, 2015,
+    2016, 2016, 2017, 2017, 2016, 2015, 2015, 2015,
+    2015, 2018, 2016, 2017, 2016, 2014, 2016, 2017,
+    2020, 2019, 2018, 2018, 2016, 2017, 2019, 2017,
+    2017, 2013, 2015, 2016, 2015, 2015, 2016, 2016,
+    2017, 2015, 2013, 2016, 2016, 2017, 2018, 2017,
+    2016, 2017, 2016, 2016, 2017, 2019, 2019, 2021,
+    2020, 2018, 2019, 2019, 2019, 2018, 2018, 2018,
+    2020, 2021, 2022, 2023, 2019, 2018, 2022, 2022,
+    2022, 2022, 2023, 2024, 2021, 2022, 2023, 2024,
+    2024, 2024, 2025, 2027, 2028, 2029, 2030, 2028,
+    2029, 2027, 2028, 2026, 2029, 2028, 2029, 2030,
+    2029, 2031, 2029, 2030, 2029, 2028, 2028, 2030,
+    2029, 2029, 2031, 2029, 2029, 2030, 2029, 2030,
+    2030, 2029, 2027, 2026, 2025, 2024, 2024, 2023,
+    2024, 2024, 2024, 2023, 2024, 2024, 2025, 2029,
+    2027, 2025, 2027, 2029, 2029, 2033, 2034, 2035,
+    2034, 2036, 2038, 2035, 2035, 2036, 2037, 2038,
+    2036, 2038, 2038, 2037, 2038, 2039, 2039, 2033,
+    2031, 2031, 2030, 2030, 2029, 2031, 2031, 2031,
+    2031, 2032, 2034, 2034, 2037, 2038, 2038, 2039,
+    2038, 2037, 2040, 2039, 2041, 2040, 2039, 2039,
+    2038, 2041, 2038, 2035, 2037, 2037, 2037, 2035,
+    2033, 2036, 2037, 2037, 2037, 2036, 2036, 2037,
+    2035, 2036, 2038, 2039, 2040, 2039, 2039, 2038,
+    2039, 2041, 2042, 2042, 2044, 2042, 2042, 2041,
+    2041, 2040, 2041, 2041, 2040, 2041, 2041, 2042,
+    2042, 2039, 2041, 2040, 2040, 2038, 2030, 2025,
+    2024, 2015, 1982, 1933, 1910, 1911, 1896, 1878,
+    1888, 1889, 1882, 1894, 1915, 1938, 1950, 1959,
+    1977, 1987, 1989, 2008, 2032, 2054, 2074, 2093,
+    2112, 2129, 2145, 2158, 2166, 2164, 2146, 2135,
+    2129, 2105, 2079, 2064, 2040, 2017, 1999, 1987,
+    1980, 1972, 1963, 1962, 1963, 1965, 1968, 1974,
+    1982, 1991, 2001, 2014, 2031, 2043, 2058, 2074,
+    2089, 2102, 2120, 2136, 2134, 2127, 2123, 2121,
+    2116, 2102, 2092, 2087, 2073, 2048, 2032, 2017,
+    1998, 1986, 1973, 1960, 1956, 1949, 1945, 1951,
+    1957, 1960, 1964, 1976, 1985, 1994, 2014, 2031,
+    2039, 2059, 2079, 2089, 2104, 2113, 2117, 2118,
+    2114, 2115, 2117, 2112, 2108, 2106, 2085, 2057,
+    2049, 2039, 2026, 2019, 2006, 1988, 1975, 1961,
+    1958, 1961, 1957, 1956, 1962, 1965, 1966, 1975,
+    1988, 1997, 2008, 2012, 2018, 2029, 2036, 2047,
+    2059, 2063, 2061, 2057, 2059, 2065, 2062, 2053,
+    2048, 2042, 2029, 2024, 2023, 2023, 2023, 2020,
+    2015, 2015, 2020, 2021, 2028, 2040, 2042, 2043,
+    2049, 2053, 2053, 2058, 2066, 2068, 2061, 2071,
+    2089, 2081, 2072, 2088, 2089, 2074, 2061, 2052,
+    2049, 2041, 2027, 2014, 2011, 2007, 2010, 2025,
+    2026, 2000, 1982, 1984, 1991, 1993, 1992, 1998,
+    1997, 2001, 2015, 2038, 2052, 2052, 2057, 2068,
+    2070, 2067, 2071, 2084, 2092, 2087, 2079, 2086,
+    2089, 2076, 2091, 2106, 2076, 2063, 2079, 2070,
+    2058, 2064, 2060, 2040, 2022, 2035, 2043, 2023,
+    2024, 2042, 2037, 2022, 2026, 2044, 2030, 2014,
+    2025, 2029, 2023, 2034, 2043, 2048, 2051, 2031,
+    2030, 2043, 2037, 2039, 2046, 2041, 2033, 2026,
+    2038, 2050, 2044, 2050, 2056, 2047, 2041, 2035,
+    2036, 2044, 2035, 2028, 2033, 2028, 2029, 2031,
+    2038, 2048, 2027, 2017, 2036, 2036, 2033, 2036,
+    2039, 2039, 2031, 2034, 2049, 2050, 2045, 2033,
+    2032, 2037, 2022, 2021, 2036, 2032, 2031, 2028,
+    2032, 2038, 2028, 2028, 2036, 2025, 2017, 2013,
+    2017, 2021, 2014, 2018, 2027, 2020, 2021, 2038,
+    2042, 2032, 2021, 2026, 2036, 2026, 2014, 2021,
+    2023, 2009, 2001, 2003, 2002, 1998, 1986, 1985,
+    1992, 1981, 1979, 2006, 2013, 2003, 2013, 2026,
+    2027, 2029, 2047, 2064, 2055, 2040, 2052, 2069,
+    2069, 2063, 2053, 2052, 2046, 2028, 2007, 1999,
+    1993, 1985, 1981, 1977, 1976, 1971, 1976, 1986,
+    1977, 1973, 1984, 1996, 2006, 2018, 2029, 2038,
+    2045, 2052, 2073, 2092, 2105, 2115, 2106, 2063,
+    2025, 2028, 2033, 1998, 1963, 1962, 1957, 1928,
+    1932, 1964, 1977, 1980, 1979, 1996, 2011, 2003,
+    2001, 2012, 2028, 2039, 2041, 2060, 2086, 2091,
+    2093, 2112, 2108, 2078, 2072, 2073, 2047, 2018,
+    1989, 1972, 1968, 1939, 1916, 1928, 1925, 1906,
+    1904, 1923, 1950, 1953, 1945, 1974, 2006, 2012,
+    2042, 2095, 2105, 2098, 2110, 2108, 2097, 2111,
+    2111, 2067, 2035, 2022, 1989, 1970, 1956, 1929,
+    1915, 1889, 1861, 1867, 1873, 1875, 1893, 1898,
+    1916, 1937, 1945, 1985, 2034, 2062, 2080, 2101,
+    2113, 2117, 2142, 2178, 2174, 2152, 2142, 2126,
+    2110, 2077, 2040, 2046, 2017, 1943, 1932, 1944,
+    1911, 1882, 1892, 1928, 1922, 1899, 1949, 1987,
+    1968, 1974, 2010, 2042, 2041, 2024, 2063, 2094,
+    2082, 2105, 2114, 2114, 2123, 2111, 2131, 2121,
+    2064, 2060, 2046, 2015, 2001, 1965, 1958, 1953,
+    1938, 1957, 1955, 1979, 2008, 1983, 2027, 2079,
+    2038, 2052, 2115, 2120, 2093, 2092, 2122, 2126,
+    2103, 2103, 2109, 2106, 2073, 2025, 2035, 2018,
+    1956, 1950, 1939, 1887, 1861, 1850, 1851, 1873,
+    1863, 1870, 1912, 1936, 1960, 1994, 2022, 2060,
+    2082, 2081, 2114, 2142, 2132, 2146, 2165, 2166,
+    2156, 2137, 2143, 2144, 2100, 2076, 2083, 2051,
+    2018, 2004, 1984, 1971, 1946, 1935, 1955, 1962,
+    1973, 1991, 1990, 2012, 2041, 2054, 2094, 2122,
+    2104, 2120, 2135, 2114, 2136, 2152, 2137, 2137,
+    2123, 2128, 2127, 2082, 2083, 2077, 2017, 1986,
+    1969, 1938, 1910, 1894, 1901, 1896, 1905, 1928,
+    1921, 1958, 2016, 2007, 2012, 2046, 2031, 2038,
+    2079, 2074, 2074, 2093, 2091, 2102, 2131, 2117,
+    2102, 2109, 2101, 2084, 2076, 2073, 2058, 2032,
+    2016, 2006, 2004, 2009, 1990, 1981, 2006, 1996,
+    1982, 2010, 2035, 2023, 2021, 2040, 2045, 2035,
+    2033, 2065, 2079, 2050, 2047, 2074, 2093, 2116,
+    2124, 2123, 2129, 2117, 2126, 2145, 2157, 2161,
+    2115, 2056, 2011, 1943, 1899, 1882, 1861, 1837,
+    1795, 1781, 1812, 1825, 1842, 1895, 1920, 1929,
+    1948, 1966, 1998, 2039, 2072, 2100, 2139, 2179,
+    2230, 2299, 2359, 2371, 2355, 2347, 2345, 2314,
+    2274, 2244, 2183, 2096, 2018, 1968, 1954, 1911,
+    1860, 1868, 1870, 1850, 1854, 1874, 1916, 1951,
+    1948, 1976, 2058, 2103, 2106, 2166, 2246, 2250,
+    2237, 2292, 2361, 2357, 2314, 2333, 2334, 2254,
+    2225, 2223, 2161, 2099, 2047, 2009, 2004, 1971,
+    1936, 1926, 1887, 1852, 1883, 1911, 1896, 1942,
+    1999, 1955, 1965, 2055, 2063, 2096, 2166, 2165,
+    2156, 2152, 2153, 2179, 2174, 2160, 2142, 2090,
+    2086, 2085, 2045, 2052, 2047, 2003, 1985, 1996,
+    2024, 2019, 2009, 2035, 2003, 1957, 1988, 2028,
+    2047, 2039, 2015, 2029, 2040, 2024, 2046, 2086,
+    2086, 2049, 2036, 2066, 2056, 2031, 2046, 2058,
+    2024, 2008, 2029, 2032, 2023, 2038, 2043, 2026,
+    2034, 2052, 2059, 2071, 2082, 2069, 2042, 2059,
+    2091, 2079, 2065, 2085, 2086, 2066, 2100, 2140,
+    2106, 2090, 2131, 2120, 2080, 2087, 2088, 2031,
+    1987, 1986, 1965, 1930, 1928, 1957, 1972, 1962,
+    1969, 2023, 2075, 2066, 2085, 2149, 2139, 2113,
+    2166, 2204, 2159, 2145, 2185, 2183, 2164, 2192,
+    2207, 2198, 2220, 2226, 2194, 2186, 2185, 2160,
+    2127, 2116, 2092, 2018, 1990, 2024, 2011, 1975,
+    2015, 2069, 2056, 2051, 2112, 2149, 2131, 2136,
+    2165, 2167, 2147, 2143, 2161, 2183, 2178, 2173,
+    2217, 2237, 2217, 2227, 2217, 2182, 2153, 2107,
+    2080, 2073, 2026, 1969, 1939, 1909, 1879, 1869,
+    1888, 1899, 1891, 1904, 1935, 1966, 1995, 2030,
+    2069, 2105, 2107, 2085, 2107, 2134, 2109, 2104,
+    2149, 2159, 2133, 2156, 2196, 2187, 2184, 2200,
+    2191, 2162, 2140, 2110, 2059, 1991, 1940, 1916,
+    1882, 1870, 1864, 1831, 1829, 1866, 1889, 1900,
+    1928, 1948, 1934, 1917, 1941, 1954, 1934, 1942,
+    1953, 1937, 1957, 1998, 2036, 2076, 2104, 2124,
+    2126, 2111, 2113, 2116, 2079, 2029, 1992, 1945,
+    1883, 1881, 1918, 1894, 1878, 1928, 1936, 1936,
+    1997, 2025, 2012, 2037, 2053, 2045, 2058, 2068,
+    2078, 2105, 2120, 2110, 2107, 2116, 2123, 2133,
+    2150, 2145, 2135, 2139, 2111, 2106, 2141, 2125,
+    2099, 2107, 2100, 2097, 2109, 2113, 2126, 2133,
+    2135, 2158, 2179, 2177, 2167, 2177, 2189, 2156,
+    2127, 2146, 2115, 2068, 2098, 2095, 2055, 2055,
+    2064, 2077, 2086, 2096, 2135, 2152, 2148, 2171,
+    2176, 2162, 2172, 2168, 2159, 2144, 2126, 2121,
+    2095, 2097, 2110, 2083, 2090, 2108, 2094, 2086,
+    2083, 2064, 2042, 2027, 2022, 2000, 1986, 1994,
+    1989, 1997, 2002, 2004, 2048, 2075, 2066, 2096,
+    2114, 2096, 2102, 2113, 2081, 2049, 2051, 2061,
+    2039, 2025, 2034, 2017, 2016, 2032, 2055, 2065,
+    2063, 2080, 2084, 2063, 2042, 2053, 2030, 1987,
+    2002, 1986, 1928, 1937, 1953, 1924, 1937, 1982,
+    1985, 1973, 1983, 1989, 1971, 1963, 1975, 1953,
+    1915, 1900, 1906, 1928, 1934, 1936, 1935, 1944,
+    1964, 1966, 1954, 1945, 1926, 1895, 1876, 1856,
+    1826, 1814, 1808, 1791, 1785, 1797, 1802, 1819,
+    1840, 1849, 1875, 1900, 1890, 1886, 1908, 1923,
+    1913, 1891, 1897, 1915, 1902, 1902, 1923, 1935,
+    1960, 1988, 2021, 2066, 2093, 2121, 2153, 2175,
+    2204, 2227, 2229, 2241, 2257, 2266, 2270, 2291,
+    2314, 2318, 2338, 2362, 2337, 2306, 2310, 2309,
+    2272, 2231, 2194, 2176, 2193, 2173, 2148, 2166,
+    2180, 2188, 2212, 2244, 2271, 2300, 2316, 2313,
+    2346, 2371, 2353, 2356, 2371, 2361, 2340, 2332,
+    2340, 2330, 2322, 2329, 2336, 2339, 2331, 2337,
+    2354, 2328, 2297, 2297, 2276, 2254, 2251, 2251,
+    2267, 2287, 2299, 2312, 2353, 2396, 2393, 2380,
+    2388, 2374, 2323, 2274, 2243, 2211, 2164, 2120,
+    2103, 2099, 2073, 2055, 2068, 2065, 2049, 2043,
+    2037, 2025, 2017, 2011, 2000, 1995, 1992, 1977,
+    1967, 1979, 1977, 1955, 1948, 1951, 1946, 1923,
+    1905, 1895, 1864, 1815, 1765, 1733, 1683, 1627,
+    1593, 1563, 1542, 1544, 1551, 1563, 1590, 1613,
+    1631, 1654, 1676, 1692, 1698, 1703, 1716, 1731,
+    1743, 1767, 1789, 1802, 1817, 1839, 1859, 1863,
+    1856, 1843, 1827, 1801, 1774, 1754, 1727, 1695,
+    1677, 1654, 1635, 1635, 1625, 1610, 1618, 1634,
+    1634, 1643, 1665, 1681, 1689, 1711, 1726, 1742,
+    1774, 1815, 1880, 1951, 2022, 2119, 2197, 2263,
+    2363, 2462, 2534, 2609, 2666, 2684, 2710, 2746,
+    2766, 2776, 2767, 2757, 2763, 2765, 2770, 2760,
+    2731, 2718, 2701, 2673, 2666, 2653, 2622, 2604,
+    2616, 2632, 2630, 2655, 2718, 2777, 2832, 2873,
+    2915, 2982, 3039, 3059, 3076, 3083, 3031, 2947,
+    2886, 2790, 2659, 2541, 2422, 2298, 2187, 2089,
+    2012, 1960, 1912, 1862, 1820, 1812, 1835, 1854,
+    1884, 1926, 1963, 1992, 2034, 2093, 2133, 2162,
+    2205, 2232, 2233, 2245, 2258, 2252, 2247, 2228,
+    2184, 2136, 2088, 2040, 1994, 1963, 1932, 1898,
+    1889, 1908, 1931, 1964, 2010, 2050, 2083, 2116,
+    2151, 2177, 2197, 2209, 2200, 2178, 2150, 2115,
+    2066, 2015, 1957, 1883, 1804, 1730, 1654, 1568,
+    1487, 1408, 1326, 1253, 1202, 1167, 1145, 1151,
+    1180, 1227, 1295, 1377, 1462, 1555, 1648, 1727,
+    1796, 1855, 1892, 1913, 1929, 1931, 1916, 1892,
+    1856, 1820, 1784, 1738, 1689, 1637, 1584, 1541,
+    1504, 1470, 1443, 1431, 1421, 1422, 1454, 1496,
+    1546, 1619, 1694, 1765, 1857, 1957, 2043, 2126,
+    2187, 2228, 2280, 2307, 2307, 2322, 2309, 2280,
+    2262, 2240, 2227, 2237, 2241, 2254, 2279, 2311,
+    2352, 2392, 2436, 2473, 2505, 2567, 2638, 2668,
+    2697, 2757, 2812, 2856, 2902, 2928, 2945, 2967,
+    2985, 2986, 2985, 2982, 2970, 2957, 2932, 2917,
+    2937, 2958, 2961, 2977, 3007, 3023, 3065, 3135,
+    3154, 3137, 3091, 2996, 2881, 2762, 2607, 2430,
+    2270, 2102, 1967, 1888, 1827, 1784, 1774, 1771,
+    1771, 1779, 1790, 1792, 1788, 1781, 1776, 1780,
+    1798, 1843, 1889, 1941, 2014, 2092, 2170, 2242,
+    2299, 2344, 2381, 2408, 2411, 2392, 2350, 2297,
+    2244, 2188, 2151, 2119, 2096, 2080, 2086, 2108,
+    2139, 2178, 2208, 2221, 2219, 2211, 2187, 2143,
+    2087, 2017, 1940, 1863, 1792, 1733, 1681, 1631,
+    1583, 1530, 1478, 1435, 1393, 1353, 1316, 1282,
+    1257, 1246, 1248, 1269, 1308, 1345, 1390, 1452,
+    1515, 1573, 1631, 1676, 1708, 1738, 1755, 1752,
+    1740, 1718, 1678, 1636, 1597, 1560, 1527, 1500,
+    1476, 1460, 1463, 1478, 1487, 1506, 1540, 1576,
+    1612, 1668, 1726, 1786, 1863, 1927, 1999, 2116,
+    2199, 2257, 2356, 2424, 2455, 2493, 2514, 2529,
+    2536, 2529, 2516, 2496, 2487, 2480, 2468, 2461,
+    2452, 2449, 2466, 2501, 2527, 2557, 2594, 2636,
+    2682, 2733, 2769, 2807, 2872, 2910, 2921, 2966,
+    3030, 3088, 3147, 3185, 3218, 3259, 3314, 3374,
+    3388, 3375, 3362, 3368, 3375, 3366, 3338, 3227,
+    3059, 2936, 2802, 2623, 2447, 2265, 2083, 1951,
+    1873, 1837, 1819, 1812, 1806, 1806, 1824, 1841,
+    1851, 1853, 1825, 1786, 1762, 1759, 1778, 1799,
+    1811, 1841, 1898, 1971, 2050, 2110, 2151, 2179,
+    2195, 2203, 2203, 2192, 2176, 2146, 2138, 2149,
+    2172, 2204, 2235, 2273, 2315, 2363, 2418, 2466,
+    2496, 2505, 2495, 2469, 2439, 2397, 2321, 2217,
+    2109, 2007, 1915, 1837, 1772, 1708, 1649, 1602,
+    1566, 1526, 1470, 1398, 1324, 1250, 1186, 1129,
+    1086, 1072, 1075, 1104, 1155, 1226, 1311, 1390,
+    1462, 1520, 1560, 1586, 1597, 1584, 1562, 1537,
+    1500, 1471, 1448, 1423, 1402, 1392, 1403, 1417,
+    1436, 1462, 1497, 1531, 1571, 1613, 1654, 1693,
+    1722, 1758, 1814, 1873, 1932, 1999, 2068, 2129,
+    2200, 2288, 2360, 2394, 2415, 2415, 2392, 2377,
+    2356, 2314, 2263, 2220, 2206, 2218, 2251, 2294,
+    2337, 2363, 2393, 2438, 2495, 2547, 2566, 2559,
+    2562, 2588, 2624, 2666, 2709, 2732, 2741, 2785,
+    2857, 2907, 2948, 2987, 3028, 3078, 3140, 3206,
+    3255, 3286, 3297, 3318, 3359, 3381, 3376, 3373,
+    3353, 3261, 3141, 3049, 2919, 2735, 2553, 2360,
+    2188, 2078, 2000, 1936, 1890, 1861, 1845, 1848,
+    1861, 1863, 1847, 1832, 1817, 1805, 1799, 1786,
+    1774, 1775, 1787, 1792, 1805, 1849, 1912, 1961,
+    1996, 2042, 2087, 2111, 2118, 2115, 2101, 2083,
+    2073, 2081, 2105, 2128, 2151, 2186, 2238, 2297,
+    2350, 2399, 2441, 2474, 2487, 2480, 2458, 2418,
+    2344, 2245, 2137, 2031, 1931, 1843, 1758, 1680,
+    1623, 1574, 1514, 1466, 1423, 1358, 1288, 1243,
+    1198, 1146, 1111, 1103, 1113, 1150, 1195, 1244,
+    1311, 1383, 1443, 1495, 1540, 1567, 1569, 1559,
+    1540, 1517, 1485, 1447, 1408, 1367, 1337, 1320,
+    1311, 1321, 1340, 1356, 1389, 1459, 1526, 1582,
+    1659, 1739, 1799, 1864, 1928, 1978, 2035, 2088,
+    2126, 2179, 2241, 2284, 2325, 2368, 2389, 2399,
+    2414, 2406, 2385, 2367, 2333, 2295, 2294, 2309,
+    2314, 2334, 2371, 2399, 2441, 2502, 2553, 2596,
+    2635, 2651, 2679, 2731, 2789, 2823, 2844, 2861,
+    2884, 2921, 2960, 3004, 3027, 3029, 3057, 3111,
+    3181, 3251, 3291, 3320, 3363, 3407, 3433, 3458,
+    3475, 3419, 3287, 3161, 3060, 2925, 2788, 2641,
+    2459, 2316, 2249, 2211, 2185, 2170, 2134, 2079,
+    2044, 2037, 2017, 1964, 1880, 1795, 1725, 1681,
+    1658, 1653, 1655, 1661, 1694, 1754, 1843, 1947,
+    2015, 2054, 2081, 2102, 2127, 2137, 2118, 2081,
+    2049, 2039, 2058, 2094, 2124, 2144, 2165, 2204,
+    2265, 2332, 2388, 2414, 2420, 2416, 2411, 2405,
+    2381, 2315, 2216, 2133, 2069, 2004, 1955, 1909,
+    1847, 1795, 1757, 1709, 1660, 1607, 1516, 1410,
+    1330, 1252, 1168, 1113, 1080, 1063, 1082, 1126,
+    1180, 1255, 1338, 1398, 1449, 1496, 1523, 1519,
+    1495, 1465, 1438, 1404, 1357, 1317, 1292, 1272,
+    1262, 1270, 1293, 1314, 1343, 1394, 1447, 1498,
+    1554, 1607, 1645, 1702, 1762, 1800, 1846, 1912,
+    1975, 2039, 2110, 2189, 2264, 2336, 2396, 2435,
+    2467, 2473, 2457, 2433, 2402, 2364, 2333, 2317,
+    2315, 2329, 2356, 2391, 2441, 2503, 2557, 2593,
+    2632, 2678, 2718, 2738, 2745, 2762, 2784, 2803,
+    2835, 2876, 2895, 2927, 2997, 3046, 3098, 3186,
+    3242, 3273, 3344, 3410, 3434, 3453, 3465, 3456,
+    3444, 3411, 3316, 3201, 3100, 2979, 2842, 2716,
+    2594, 2480, 2382, 2314, 2287, 2267, 2228, 2179,
+    2143, 2119, 2086, 2047, 2013, 1979, 1939, 1893,
+    1847, 1832, 1837, 1824, 1802, 1801, 1828, 1864,
+    1900, 1931, 1955, 1974, 1982, 1989, 1997, 2002,
+    1990, 1983, 2001, 2040, 2081, 2108, 2145, 2201,
+    2261, 2317, 2368, 2413, 2445, 2458, 2460, 2458,
+    2449, 2422, 2357, 2270, 2201, 2148, 2088, 2020,
+    1948, 1869, 1802, 1737, 1670, 1617, 1554, 1464,
+    1386, 1338, 1296, 1250, 1212, 1189, 1191, 1213,
+    1236, 1271, 1320, 1364, 1392, 1423, 1454, 1468,
+    1455, 1429, 1400, 1373, 1340, 1305, 1263, 1234,
+    1211, 1192, 1197, 1219, 1242, 1268, 1303, 1353,
+    1421, 1491, 1555, 1618, 1679, 1757, 1830, 1879,
+    1944, 2019, 2070, 2119, 2181, 2235, 2279, 2319,
+    2346, 2361, 2380, 2383, 2365, 2357, 2355, 2347,
+    2335, 2344, 2368, 2396, 2431, 2472, 2520, 2574,
+    2619, 2666, 2725, 2772, 2805, 2838, 2875, 2914,
+    2949, 2979, 3001, 3024, 3055, 3082, 3106, 3134,
+    3177, 3221, 3258, 3312, 3367, 3408, 3456, 3495,
+    3502, 3481, 3419, 3321, 3218, 3105, 2971, 2827,
+    2692, 2583, 2498, 2440, 2404, 2379, 2350, 2316,
+    2286, 2255, 2220, 2176, 2115, 2057, 1997, 1929,
+    1867, 1819, 1781, 1752, 1726, 1714, 1726, 1754,
+    1793, 1837, 1879, 1922, 1953, 1968, 1976, 1982,
+    1979, 1967, 1966, 1976, 1985, 1999, 2030, 2074,
+    2130, 2188, 2247, 2309, 2355, 2385, 2403, 2412,
+    2403, 2378, 2338, 2284, 2218, 2152, 2109, 2076,
+    2025, 1959, 1898, 1840, 1775, 1715, 1658, 1580,
+    1500, 1425, 1356, 1307, 1269, 1221, 1177, 1165,
+    1162, 1160, 1184, 1220, 1250, 1276, 1309, 1337,
+    1359, 1372, 1375, 1364, 1345, 1319, 1288, 1252,
+    1217, 1188, 1163, 1152, 1157, 1178, 1204, 1244,
+    1288, 1344, 1407, 1466, 1524, 1589, 1649, 1710,
+    1771, 1834, 1901, 1960, 2014, 2073, 2125, 2176,
+    2223, 2261, 2295, 2329, 2348, 2362, 2376, 2384,
+    2391, 2403, 2417, 2418, 2421, 2439, 2465, 2501,
+    2540, 2581, 2624, 2676, 2722, 2765, 2824, 2870,
+    2891, 2916, 2943, 2961, 2993, 3028, 3063, 3097,
+    3136, 3183, 3238, 3300, 3345, 3372, 3400, 3428,
+    3440, 3420, 3379, 3313, 3222, 3138, 3059, 2955,
+    2843, 2738, 2634, 2561, 2514, 2465, 2418, 2379,
+    2338, 2299, 2283, 2268, 2230, 2181, 2127, 2056,
+    1974, 1906, 1857, 1802, 1741, 1704, 1690, 1699,
+    1727, 1761, 1793, 1825, 1850, 1868, 1881, 1891,
+    1887, 1875, 1873, 1881, 1885, 1895, 1920, 1950,
+    1988, 2035, 2085, 2133, 2175, 2214, 2248, 2264,
+    2275, 2286, 2280, 2258, 2233, 2198, 2148, 2109,
+    2083, 2027, 1964, 1908, 1840, 1773, 1732, 1686,
+    1620, 1566, 1512, 1443, 1392, 1359, 1301, 1247,
+    1218, 1187, 1163, 1171, 1189, 1205, 1224, 1252,
+    1279, 1300, 1323, 1338, 1335, 1319, 1303, 1288,
+    1265, 1238, 1213, 1189, 1181, 1186, 1187, 1195,
+    1223, 1250, 1283, 1334, 1388, 1436, 1500, 1563,
+    1619, 1679, 1740, 1802, 1859, 1914, 1962, 2008,
+    2057, 2107, 2156, 2209, 2258, 2293, 2321, 2359,
+    2388, 2407, 2427, 2442, 2446, 2445, 2452, 2471,
+    2494, 2516, 2543, 2579, 2620, 2666, 2717, 2769,
+    2816, 2854, 2889, 2933, 2971, 3001, 3042, 3079,
+    3106, 3147, 3185, 3217, 3254, 3285, 3299, 3323,
+    3344, 3334, 3313, 3300, 3253, 3184, 3133, 3067,
+    2976, 2893, 2808, 2725, 2666, 2615, 2555, 2509,
+    2470, 2425, 2393, 2374, 2345, 2315, 2282, 2231,
+    2180, 2124, 2060, 2004, 1955, 1900, 1851, 1821,
+    1799, 1792, 1804, 1815, 1827, 1841, 1848, 1860,
+    1876, 1881, 1882, 1888, 1893, 1893, 1898, 1914,
+    1932, 1951, 1980, 2011, 2047, 2082, 2116, 2147,
+    2170, 2184, 2199, 2208, 2201, 2187, 2157, 2122,
+    2101, 2066, 2014, 1960, 1903, 1839, 1794, 1760,
+    1711, 1669, 1632, 1587, 1555, 1537, 1503, 1467,
+    1444, 1412, 1372, 1358, 1353, 1341, 1344, 1350,
+    1354, 1363, 1384, 1393, 1401, 1402, 1397, 1393,
+    1383, 1358, 1334, 1310, 1288, 1273, 1266, 1266,
+    1268, 1275, 1299, 1334, 1370, 1415, 1467, 1515,
+    1564, 1620, 1676, 1722, 1775, 1825, 1861, 1903,
+    1945, 1981, 2024, 2073, 2109, 2143, 2190, 2241,
+    2276, 2320, 2372, 2402, 2426, 2457, 2481, 2498,
+    2521, 2544, 2563, 2584, 2603, 2629, 2662, 2696,
+    2729, 2758, 2785, 2808, 2839, 2876, 2907, 2936,
+    2972, 3010, 3045, 3083, 3121, 3150, 3175, 3200,
+    3217, 3234, 3245, 3238, 3220, 3201, 3178, 3145,
+    3107, 3061, 3001, 2936, 2877, 2827, 2774, 2718,
+    2665, 2610, 2561, 2522, 2484, 2447, 2410, 2366,
+    2317, 2266, 2210, 2155, 2110, 2059, 2010, 1968,
+    1935, 1910, 1905, 1903, 1896, 1898, 1906, 1903,
+    1903, 1912, 1912, 1910, 1919, 1926, 1926, 1927,
+    1937, 1948, 1952, 1965, 1980, 1986, 2000, 2015,
+    2021, 2031, 2046, 2058, 2061, 2059, 2048, 2036,
+    2025, 2005, 1976, 1943, 1905, 1860, 1823, 1798,
+    1772, 1745, 1719, 1685, 1659, 1644, 1621, 1597,
+    1580, 1550, 1511, 1484, 1466, 1451, 1450, 1453,
+    1443, 1434, 1441, 1454, 1460, 1458, 1453, 1445,
+    1434, 1423, 1406, 1386, 1371, 1360, 1343, 1334,
+    1335, 1333, 1336, 1350, 1370, 1394, 1429, 1471,
+    1509, 1546, 1585, 1641, 1696, 1740, 1781, 1824,
+    1865, 1905, 1950, 1988, 2018, 2056, 2093, 2130,
+    2176, 2220, 2252, 2289, 2337, 2370, 2389, 2427,
+    2464, 2479, 2504, 2542, 2566, 2591, 2627, 2654,
+    2677, 2712, 2753, 2788, 2812, 2841, 2886, 2932,
+    2976, 3012, 3042, 3078, 3118, 3143, 3160, 3180,
+    3197, 3204, 3206, 3206, 3202, 3195, 3183, 3166,
+    3140, 3105, 3074, 3045, 3003, 2952, 2903, 2859,
+    2823, 2780, 2725, 2682, 2646, 2608, 2573, 2532,
+    2486, 2443, 2399, 2342, 2287, 2244, 2199, 2152,
+    2109, 2065, 2033, 2022, 2002, 1975, 1960, 1952,
+    1938, 1935, 1934, 1928, 1921, 1922, 1924, 1924,
+    1933, 1944, 1947, 1958, 1973, 1981, 1985, 1992,
+    2002, 2004, 2004, 2013, 2020, 2019, 2009, 1999,
+    1993, 1984, 1969, 1945, 1904, 1864, 1831, 1797,
+    1768, 1741, 1709, 1678, 1655, 1641, 1628, 1613,
+    1605, 1595, 1572, 1557, 1554, 1547, 1537, 1535,
+    1531, 1522, 1520, 1525, 1520, 1512, 1509, 1497,
+    1480, 1465, 1446, 1427, 1406, 1392, 1378, 1364,
+    1360, 1354, 1347, 1355, 1374, 1390, 1413, 1439,
+    1471, 1510, 1558, 1606, 1657, 1707, 1748, 1791,
+    1834, 1869, 1906, 1940, 1965, 1998, 2029, 2063,
+    2099, 2138, 2175, 2211, 2250, 2283, 2310, 2340,
+    2370, 2396, 2422, 2455, 2477, 2504, 2533, 2565,
+    2596, 2632, 2667, 2695, 2730, 2768, 2806, 2845,
+    2889, 2920, 2951, 2991, 3035, 3069, 3094, 3113,
+    3129, 3141, 3149, 3150, 3145, 3139, 3127, 3111,
+    3102, 3091, 3065, 3039, 3017, 2982, 2948, 2918,
+    2886, 2846, 2807, 2770, 2729, 2696, 2669, 2632,
+    2587, 2544, 2495, 2441, 2389, 2344, 2289, 2232,
+    2189, 2143, 2101, 2072, 2048, 2023, 2002, 1987,
+    1970, 1954, 1949, 1935, 1922, 1923, 1914, 1906,
+    1911, 1919, 1927, 1936, 1946, 1950, 1955, 1959,
+    1959, 1950, 1942, 1930, 1922, 1916, 1905, 1889,
+    1879, 1871, 1854, 1836, 1807, 1772, 1738, 1707,
+    1679, 1653, 1632, 1608, 1582, 1569, 1559, 1542,
+    1534, 1531, 1515, 1497, 1492, 1487, 1482, 1485,
+    1487, 1481, 1478, 1482, 1484, 1479, 1473, 1458,
+    1437, 1416, 1395, 1372, 1348, 1332, 1317, 1303,
+    1295, 1293, 1294, 1301, 1313, 1328, 1347, 1367,
+    1390, 1421, 1458, 1496, 1534, 1576, 1621, 1660,
+    1696, 1734, 1765, 1797, 1829, 1853, 1877, 1910,
+    1939, 1970, 2010, 2049, 2077, 2111, 2144, 2166,
+    2196, 2231, 2253, 2281, 2309, 2331, 2361, 2403,
+    2436, 2469, 2507, 2536, 2567, 2600, 2636, 2673,
+    2707, 2743, 2776, 2812, 2856, 2893, 2921, 2950,
+    2976, 2994, 3003, 3010, 3014, 3014, 3015, 3013,
+    3005, 2999, 2989, 2978, 2966, 2953, 2939, 2915,
+    2891, 2861, 2835, 2809, 2781, 2758, 2734, 2705,
+    2666, 2628, 2588, 2532, 2478, 2426, 2371, 2312,
+    2257, 2206, 2159, 2124, 2094, 2064, 2034, 2016,
+    1990, 1973, 1967, 1947, 1929, 1921, 1907, 1890,
+    1888, 1892, 1893, 1897, 1902, 1908, 1907, 1908,
+    1906, 1893, 1879, 1864, 1849, 1830, 1814, 1803,
+    1789, 1775, 1765, 1748, 1722, 1693, 1662, 1629,
+    1597, 1568, 1539, 1512, 1496, 1481, 1467, 1458,
+    1452, 1437, 1425, 1412, 1399, 1390, 1389, 1391,
+    1394, 1392, 1394, 1404, 1406, 1410, 1411, 1403,
+    1383, 1364, 1345, 1318, 1294, 1276, 1257, 1238,
+    1231, 1226, 1222, 1227, 1234, 1240, 1255, 1274,
+    1291, 1314, 1346, 1384, 1420, 1460, 1504, 1544,
+    1583, 1622, 1651, 1679, 1707, 1733, 1750, 1773,
+    1802, 1829, 1857, 1892, 1927, 1955, 1985, 2014,
+    2040, 2061, 2090, 2114, 2132, 2160, 2194, 2226,
+    2265, 2306, 2346, 2383, 2419, 2459, 2497, 2534,
+    2571, 2603, 2633, 2671, 2709, 2742, 2778, 2811,
+    2836, 2864, 2886, 2902, 2915, 2925, 2924, 2932,
+    2938, 2943, 2943, 2944, 2945, 2942, 2941, 2935,
+    2923, 2914, 2897, 2878, 2861, 2840, 2818, 2800,
+    2779, 2755, 2726, 2693, 2651, 2602, 2556, 2504,
+    2453, 2399, 2341, 2291, 2243, 2208, 2172, 2138,
+    2111, 2082, 2053, 2035, 2022, 2002, 1987, 1977,
+    1958, 1944, 1939, 1934, 1931, 1932, 1934, 1930,
+    1928, 1925, 1916, 1898, 1883, 1861, 1839, 1824,
+    1810, 1800, 1787, 1775, 1762, 1741, 1714, 1682,
+    1650, 1616, 1578, 1545, 1514, 1482, 1464, 1449,
+    1430, 1420, 1414, 1396, 1380, 1373, 1367, 1355,
+    1352, 1349, 1345, 1346, 1352, 1360, 1362, 1365,
+    1366, 1355, 1341, 1332, 1317, 1294, 1277, 1255,
+    1233, 1221, 1215, 1209, 1208, 1212, 1212, 1219,
+    1233, 1250, 1270, 1293, 1319, 1353, 1388, 1425,
+    1469, 1515, 1552, 1580, 1612, 1636, 1655, 1678,
+    1698, 1712, 1734, 1769, 1789, 1813, 1848, 1878,
+    1901, 1929, 1952, 1969, 1991, 2013, 2035, 2059,
+    2092, 2123, 2156, 2192, 2233, 2275, 2314, 2360,
+    2404, 2440, 2479, 2518, 2555, 2595, 2632, 2669,
+    2705, 2739, 2766, 2794, 2818, 2836, 2861, 2881,
+    2889, 2901, 2915, 2929, 2946, 2966, 2973, 2975,
+    2988, 2990, 2982, 2985, 2976, 2953, 2937, 2926,
+    2910, 2889, 2876, 2858, 2831, 2800, 2767, 2722,
+    2670, 2624, 2575, 2517, 2462, 2414, 2361, 2314,
+    2276, 2243, 2208, 2180, 2156, 2125, 2099, 2085,
+    2068, 2051, 2041, 2029, 2015, 2008, 2007, 2011,
+    2013, 2010, 2007, 1996, 1985, 1972, 1958, 1933,
+    1908, 1892, 1873, 1855, 1845, 1836, 1821, 1807,
+    1790, 1762, 1733, 1706, 1674, 1638, 1604, 1576,
+    1547, 1521, 1503, 1483, 1462, 1449, 1431, 1410,
+    1396, 1383, 1366, 1360, 1355, 1346, 1343, 1343,
+    1343, 1343, 1342, 1340, 1334, 1323, 1311, 1297,
+    1283, 1268, 1251, 1236, 1220, 1209, 1204, 1200,
+    1201, 1202, 1208, 1215, 1227, 1244, 1262, 1287,
+    1318, 1352, 1385, 1424, 1459, 1490, 1522, 1554,
+    1578, 1598, 1620, 1637, 1656, 1680, 1711, 1740,
+    1764, 1797, 1826, 1854, 1884, 1916, 1945, 1967,
+    1994, 2019, 2044, 2074, 2108, 2145, 2178, 2217,
+    2253, 2294, 2334, 2374, 2419, 2463, 2506, 2552,
+    2594, 2640, 2681, 2717, 2756, 2793, 2820, 2849,
+    2878, 2903, 2924, 2948, 2968, 2982, 3009, 3030,
+    3045, 3064, 3082, 3095, 3100, 3105, 3103, 3093,
+    3089, 3073, 3057, 3045, 3028, 3009, 2985, 2956,
+    2922, 2881, 2833, 2776, 2716, 2661, 2599, 2537,
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+    2178, 2153, 2136, 2116, 2102, 2092, 2084, 2069,
+    2061, 2058, 2057, 2055, 2056, 2054, 2046, 2036,
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+    1873, 1860, 1852, 1833, 1811, 1788, 1760, 1735,
+    1711, 1686, 1662, 1634, 1608, 1593, 1569, 1541,
+    1518, 1491, 1454, 1426, 1406, 1382, 1369, 1364,
+    1347, 1326, 1324, 1318, 1307, 1298, 1290, 1277,
+    1261, 1252, 1242, 1229, 1219, 1211, 1195, 1178,
+    1171, 1163, 1149, 1145, 1145, 1137, 1139, 1149,
+    1159, 1173, 1191, 1215, 1239, 1265, 1293, 1321,
+    1353, 1382, 1414, 1446, 1469, 1497, 1524, 1551,
+    1583, 1614, 1642, 1665, 1697, 1727, 1753, 1787,
+    1818, 1840, 1868, 1896, 1921, 1948, 1980, 2009,
+    2040, 2077, 2113, 2149, 2187, 2226, 2267, 2309,
+    2357, 2405, 2452, 2501, 2549, 2596, 2644, 2685,
+    2722, 2759, 2797, 2831, 2863, 2900, 2934, 2958,
+    2993, 3021, 3042, 3068, 3094, 3116, 3134, 3152,
+    3165, 3173, 3181, 3180, 3173, 3164, 3154, 3139,
+    3123, 3103, 3075, 3049, 3014, 2979, 2933, 2869,
+    2798, 2732, 2669, 2597, 2532, 2466, 2396, 2341,
+    2299, 2259, 2228, 2201, 2176, 2148, 2125, 2107,
+    2094, 2082, 2076, 2066, 2044, 2034, 2033, 2031,
+    2033, 2038, 2032, 2023, 2020, 2010, 1995, 1976,
+    1956, 1932, 1907, 1887, 1870, 1854, 1843, 1834,
+    1811, 1788, 1770, 1748, 1728, 1712, 1700, 1684,
+    1667, 1652, 1636, 1615, 1592, 1569, 1534, 1489,
+    1447, 1408, 1380, 1354, 1328, 1301, 1280, 1260,
+    1242, 1231, 1219, 1201, 1179, 1159, 1137, 1121,
+    1108, 1095, 1087, 1077, 1069, 1064, 1058, 1055,
+    1057, 1054, 1051, 1059, 1064, 1070, 1081, 1096,
+    1113, 1134, 1158, 1179, 1200, 1218, 1240, 1267,
+    1293, 1322, 1349, 1373, 1409, 1452, 1491, 1529,
+    1570, 1605, 1632, 1663, 1693, 1718, 1749, 1780,
+    1799, 1822, 1858, 1896, 1928, 1963, 2001, 2033,
+    2066, 2107, 2141, 2177, 2223, 2264, 2301, 2351,
+    2400, 2449, 2498, 2546, 2593, 2636, 2683, 2730,
+    2769, 2810, 2858, 2901, 2939, 2986, 3032, 3065,
+    3101, 3137, 3164, 3193, 3219, 3236, 3257, 3273,
+    3275, 3276, 3281, 3273, 3258, 3247, 3225, 3201,
+    3173, 3143, 3108, 3061, 3009, 2947, 2872, 2788,
+    2704, 2627, 2545, 2457, 2380, 2310, 2243, 2191,
+    2156, 2123, 2094, 2072, 2046, 2025, 2014, 2002,
+    1984, 1972, 1967, 1955, 1950, 1958, 1961, 1965,
+    1970, 1975, 1972, 1964, 1960, 1943, 1920, 1898,
+    1872, 1844, 1816, 1799, 1781, 1767, 1757, 1748,
+    1733, 1716, 1706, 1700, 1701, 1704, 1706, 1710,
+    1710, 1702, 1692, 1675, 1648, 1616, 1578, 1536,
+    1492, 1453, 1411, 1382, 1356, 1321, 1289, 1266,
+    1241, 1208, 1179, 1152, 1115, 1085, 1062, 1038,
+    1020, 1006, 997, 994, 988, 987, 986, 993,
+    998, 1002, 1012, 1021, 1036, 1049, 1060, 1076,
+    1091, 1109, 1128, 1149, 1166, 1179, 1193, 1215,
+    1245, 1276, 1307, 1339, 1374, 1413, 1456, 1500,
+    1540, 1574, 1602, 1635, 1670, 1709, 1747, 1783,
+    1820, 1860, 1899, 1941, 1988, 2035, 2076, 2112,
+    2146, 2181, 2215, 2252, 2287, 2320, 2360, 2401,
+    2450, 2498, 2546, 2597, 2649, 2697, 2747, 2800,
+    2851, 2901, 2953, 3010, 3057, 3100, 3144, 3182,
+    3221, 3265, 3301, 3327, 3359, 3385, 3406, 3427,
+    3442, 3454, 3457, 3447, 3431, 3412, 3385, 3351,
+    3320, 3284, 3234, 3187, 3136, 3076, 3012, 2935,
+    2845, 2749, 2654, 2562, 2465, 2374, 2289, 2216,
+    2153, 2100, 2059, 2020, 1990, 1968, 1946, 1926,
+    1911, 1899, 1891, 1889, 1887, 1887, 1894, 1902,
+    1915, 1926, 1932, 1937, 1932, 1922, 1911, 1893,
+    1876, 1861, 1845, 1827, 1808, 1794, 1784, 1779,
+    1776, 1762, 1745, 1734, 1725, 1730, 1743, 1757,
+    1771, 1783, 1787, 1790, 1792, 1781, 1756, 1720,
+    1674, 1624, 1580, 1541, 1498, 1459, 1422, 1384,
+    1352, 1326, 1281, 1230, 1189, 1144, 1086, 1040,
+    1005, 966, 939, 923, 915, 908, 911, 917,
+    919, 922, 931, 944, 948, 952, 961, 972,
+    981, 1004, 1031, 1046, 1060, 1074, 1088, 1104,
+    1126, 1151, 1174, 1203, 1239, 1279, 1322, 1376,
+    1421, 1457, 1494, 1528, 1559, 1586, 1625, 1665,
+    1702, 1747, 1794, 1851, 1909, 1968, 2021, 2064,
+    2103, 2136, 2169, 2198, 2223, 2252, 2281, 2316,
+    2356, 2398, 2446, 2496, 2543, 2593, 2645, 2697,
+    2748, 2803, 2862, 2919, 2979, 3036, 3090, 3140,
+    3185, 3221, 3251, 3278, 3300, 3323, 3348, 3375,
+    3398, 3422, 3441, 3464, 3489, 3504, 3505, 3499,
+    3489, 3467, 3440, 3414, 3375, 3335, 3309, 3270,
+    3221, 3180, 3122, 3038, 2947, 2844, 2737, 2623,
+    2503, 2388, 2277, 2176, 2098, 2039, 1989, 1943,
+    1901, 1864, 1828, 1809, 1791, 1762, 1748, 1749,
+    1745, 1753, 1780, 1804, 1828, 1854, 1876, 1889,
+    1902, 1911, 1910, 1896, 1888, 1889, 1886, 1879,
+    1876, 1875, 1866, 1859, 1857, 1841, 1817, 1795,
+    1771, 1753, 1754, 1763, 1769, 1785, 1813, 1843,
+    1868, 1885, 1883, 1853, 1819, 1786, 1750, 1709,
+    1667, 1624, 1580, 1548, 1525, 1496, 1462, 1419,
+    1361, 1298, 1228, 1154, 1083, 1016, 951, 889,
+    843, 808, 789, 778, 772, 776, 785, 797,
+    812, 830, 841, 858, 880, 893, 912, 938,
+    960, 985, 1021, 1052, 1081, 1115, 1145, 1182,
+    1227, 1268, 1313, 1356, 1390, 1424, 1460, 1487,
+    1507, 1530, 1547, 1561, 1586, 1620, 1659, 1709,
+    1764, 1823, 1885, 1945, 1994, 2039, 2079, 2113,
+    2138, 2162, 2190, 2211, 2237, 2270, 2316, 2368,
+    2419, 2473, 2530, 2584, 2638, 2705, 2766, 2821,
+    2877, 2941, 2995, 3046, 3103, 3157, 3202, 3240,
+    3280, 3322, 3364, 3401, 3433, 3476, 3516, 3548,
+    3588, 3630, 3656, 3656, 3652, 3650, 3629, 3599,
+    3563, 3524, 3479, 3434, 3398, 3367, 3334, 3294,
+    3252, 3205, 3128, 3029, 2911, 2771, 2633, 2492,
+    2352, 2209, 2076, 1972, 1887, 1824, 1787, 1752,
+    1719, 1689, 1660, 1634, 1620, 1605, 1591, 1586,
+    1588, 1592, 1610, 1642, 1675, 1703, 1733, 1762,
+    1787, 1819, 1843, 1856, 1865, 1872, 1877, 1878,
+    1867, 1854, 1840, 1821, 1804, 1786, 1765, 1743,
+    1726, 1723, 1741, 1769, 1793, 1828, 1861, 1902,
+    1944, 1976, 1994, 2000, 1988, 1959, 1929, 1908,
+    1883, 1843, 1800, 1754, 1711, 1658, 1596, 1535,
+    1455, 1354, 1259, 1171, 1075, 977, 877, 780,
+    701, 638, 580, 545, 531, 516, 513, 548,
+    590, 623, 669, 724, 767, 808, 859, 898,
+    925, 951, 978, 1007, 1033, 1070, 1111, 1141,
+    1169, 1209, 1251, 1287, 1318, 1342, 1356, 1376,
+    1397, 1415, 1431, 1450, 1475, 1504, 1544, 1595,
+    1645, 1687, 1739, 1799, 1853, 1903, 1953, 1994,
+    2023, 2052, 2082, 2102, 2123, 2147, 2168, 2184,
+    2213, 2256, 2294, 2331, 2382, 2434, 2480, 2536,
+    2592, 2645, 2699, 2760, 2820, 2878, 2951, 3015,
+    3072, 3132, 3193, 3263, 3327, 3380, 3423, 3474,
+    3526, 3562, 3598, 3642, 3672, 3691, 3711, 3728,
+    3735, 3723, 3700, 3678, 3657, 3608, 3548, 3499,
+    3457, 3382, 3313, 3273, 3208, 3142, 3075, 2959,
+    2817, 2667, 2519, 2370, 2221, 2069, 1919, 1806,
+    1717, 1645, 1604, 1570, 1528, 1489, 1456, 1427,
+    1402, 1369, 1344, 1348, 1363, 1373, 1404, 1457,
+    1507, 1553, 1606, 1660, 1709, 1755, 1788, 1814,
+    1831, 1842, 1851, 1841, 1823, 1812, 1799, 1787,
+    1788, 1790, 1774, 1756, 1750, 1751, 1765, 1798,
+    1819, 1836, 1865, 1907, 1947, 1986, 2017, 2027,
+    2025, 2025, 2033, 2050, 2070, 2073, 2068, 2054,
+    2022, 1971, 1907, 1814, 1695, 1575, 1452, 1322,
+    1207, 1104, 999, 907, 833, 756, 684, 625,
+    552, 482, 446, 421, 396, 394, 417, 445,
+    486, 556, 636, 709, 784, 863, 927, 986,
+    1044, 1096, 1138, 1182, 1228, 1277, 1328, 1379,
+    1423, 1452, 1474, 1484, 1485, 1486, 1495, 1510,
+    1525, 1544, 1574, 1609, 1638, 1671, 1709, 1738,
+    1758, 1777, 1800, 1826, 1856, 1892, 1932, 1975,
+    2014, 2050, 2083, 2116, 2140, 2148, 2151, 2157,
+    2161, 2170, 2187, 2210, 2240, 2284, 2344, 2409,
+    2477, 2550, 2624, 2702, 2778, 2854, 2938, 3026,
+    3115, 3202, 3281, 3353, 3429, 3507, 3561, 3601,
+    3650, 3683, 3706, 3747, 3797, 3830, 3873, 3924,
+    3949, 3972, 3978, 3955, 3922, 3887, 3821, 3732,
+    3655, 3579, 3479, 3401, 3352, 3285, 3209, 3141,
+    3040, 2876, 2688, 2517, 2355, 2168, 1979, 1819,
+    1679, 1564, 1495, 1459, 1424, 1386, 1344, 1301,
+    1274, 1256, 1223, 1201, 1210, 1236, 1261, 1312,
+    1384, 1449, 1511, 1577, 1641, 1695, 1750, 1801,
+    1834, 1853, 1880, 1912, 1919, 1911, 1910, 1906,
+    1897, 1903, 1903, 1884, 1856, 1834, 1824, 1842,
+    1887, 1927, 1954, 1992, 2046, 2096, 2142, 2177,
+    2194, 2185, 2167, 2166, 2186, 2213, 2246, 2277,
+    2306, 2334, 2333, 2288, 2207, 2101, 1966, 1800,
+    1634, 1475, 1312, 1164, 1042, 941, 857, 784,
+    716, 654, 599, 541, 481, 435, 405, 384,
+    379, 399, 446, 520, 616, 713, 806, 898,
+    986, 1072, 1150, 1217, 1280, 1331, 1368, 1404,
+    1442, 1478, 1507, 1520, 1518, 1506, 1489, 1474,
+    1482, 1505, 1526, 1549, 1577, 1614, 1655, 1687,
+    1707, 1719, 1719, 1711, 1715, 1727, 1744, 1767,
+    1803, 1848, 1899, 1953, 1994, 2024, 2043, 2045,
+    2035, 2020, 2002, 1986, 1975, 1971, 1987, 2018,
+    2059, 2111, 2166, 2228, 2299, 2377, 2464, 2553,
+    2637, 2724, 2814, 2914, 3028, 3140, 3240, 3332,
+    3412, 3474, 3542, 3616, 3671, 3720, 3764, 3805,
+    3855, 3908, 3953, 3986, 4025, 4042, 4044, 4048,
+    4038, 3998, 3961, 3927, 3885, 3828, 3774, 3712,
+    3639, 3573, 3491, 3406, 3320, 3221, 3102, 2943,
+    2742, 2530, 2346, 2173, 1982, 1799, 1648, 1520,
+    1422, 1366, 1330, 1297, 1248, 1199, 1170, 1160,
+    1130, 1098, 1100, 1128, 1156, 1198, 1264, 1342,
+    1427, 1518, 1601, 1680, 1763, 1838, 1889, 1930,
+    1965, 1996, 2010, 2003, 1990, 1980, 1974, 1977,
+    1988, 1997, 1998, 1992, 1984, 2002, 2047, 2085,
+    2102, 2124, 2152, 2181, 2216, 2246, 2262, 2268,
+    2263, 2275, 2302, 2335, 2376, 2413, 2447, 2483,
+    2511, 2513, 2494, 2446, 2364, 2246, 2118, 1985,
+    1833, 1679, 1530, 1383, 1250, 1135, 1038, 947,
+    858, 776, 700, 640, 579, 518, 464, 420,
+    396, 395, 421, 465, 520, 577, 648, 746,
+    848, 938, 1029, 1115, 1188, 1256, 1322, 1372,
+    1413, 1441, 1448, 1443, 1450, 1461, 1469, 1480,
+    1500, 1528, 1562, 1606, 1649, 1675, 1692, 1699,
+    1687, 1682, 1680, 1671, 1665, 1675, 1693, 1724,
+    1764, 1809, 1853, 1888, 1915, 1933, 1945, 1947,
+    1929, 1901, 1866, 1838, 1823, 1814, 1817, 1829,
+    1846, 1875, 1915, 1969, 2030, 2093, 2161, 2232,
+    2308, 2389, 2471, 2554, 2644, 2731, 2823, 2918,
+    3032, 3147, 3228, 3317, 3411, 3490, 3582, 3674,
+    3736, 3781, 3821, 3846, 3882, 3932, 3947, 3947,
+    3976, 4000, 4013, 4047, 4080, 4083, 4083, 4079,
+    4052, 4025, 3978, 3903, 3825, 3745, 3646, 3543,
+    3457, 3355, 3229, 3081, 2872, 2637, 2440, 2233,
+    2004, 1804, 1624, 1462, 1332, 1234, 1156, 1091,
+    1036, 971, 913, 884, 848, 800, 797, 850,
+    917, 990, 1081, 1192, 1306, 1426, 1536, 1625,
+    1715, 1785, 1832, 1867, 1904, 1953, 1978, 1982,
+    1993, 2014, 2031, 2047, 2067, 2072, 2064, 2041,
+    2013, 2008, 2027, 2043, 2045, 2054, 2088, 2131,
+    2168, 2198, 2230, 2248, 2259, 2287, 2329, 2375,
+    2421, 2470, 2517, 2569, 2613, 2619, 2593, 2547,
+    2484, 2404, 2326, 2256, 2172, 2065, 1941, 1812,
+    1679, 1549, 1416, 1271, 1127, 994, 860, 747,
+    663, 577, 491, 424, 376, 356, 342, 336,
+    334, 347, 378, 429, 509, 594, 677, 766,
+    867, 969, 1064, 1145, 1220, 1288, 1342, 1389,
+    1428, 1461, 1481, 1503, 1528, 1554, 1589, 1622,
+    1627, 1615, 1602, 1584, 1577, 1569, 1559, 1560,
+    1566, 1571, 1585, 1614, 1640, 1660, 1670, 1685,
+    1706, 1720, 1723, 1727, 1731, 1736, 1740, 1743,
+    1747, 1745, 1731, 1709, 1690, 1678, 1671, 1667,
+    1676, 1700, 1740, 1787, 1841, 1903, 1965, 2033,
+    2109, 2189, 2267, 2352, 2441, 2527, 2626, 2743,
+    2857, 2965, 3071, 3173, 3259, 3334, 3404, 3461,
+    3530, 3603, 3653, 3704, 3752, 3795, 3834, 3883,
+    3935, 3970, 4002, 4038, 4052, 4058, 4075, 4095,
+    4094, 4084, 4076, 4046, 4017, 3989, 3933, 3855,
+    3773, 3674, 3558, 3452, 3351, 3209, 3023, 2797,
+    2555, 2342, 2122, 1878, 1665, 1482, 1308, 1166,
+    1067, 979, 909, 855, 779, 731, 714, 658,
+    615, 635, 679, 744, 832, 920, 1027, 1152,
+    1272, 1387, 1507, 1618, 1709, 1767, 1810, 1867,
+    1929, 1956, 1961, 1974, 1984, 1992, 2018, 2034,
+    2038, 2044, 2024, 2000, 2018, 2051, 2063, 2059,
+    2067, 2090, 2128, 2158, 2185, 2209, 2224, 2237,
+    2277, 2334, 2395, 2452, 2504, 2562, 2627, 2677,
+    2694, 2677, 2632, 2570, 2504, 2446, 2397, 2332,
+    2259, 2182, 2109, 2034, 1951, 1852, 1732, 1593,
+    1437, 1291, 1167, 1047, 926, 810, 706, 632,
+    577, 522, 487, 465, 427, 397, 412, 435,
+    454, 488, 532, 593, 675, 760, 828, 903,
+    980, 1041, 1108, 1181, 1249, 1306, 1354, 1402,
+    1465, 1533, 1578, 1605, 1614, 1611, 1609, 1603,
+    1592, 1592, 1597, 1588, 1594, 1620, 1651, 1686,
+    1702, 1700, 1696, 1700, 1695, 1694, 1695, 1690,
+    1693, 1699, 1717, 1743, 1753, 1754, 1754, 1751,
+    1742, 1731, 1719, 1702, 1688, 1687, 1693, 1706,
+    1723, 1741, 1767, 1803, 1851, 1905, 1964, 2034,
+    2106, 2183, 2272, 2373, 2471, 2564, 2660, 2756,
+    2847, 2947, 3037, 3120, 3209, 3289, 3362, 3432,
+    3508, 3576, 3621, 3668, 3712, 3749, 3784, 3803,
+    3821, 3862, 3892, 3900, 3928, 3973, 3988, 4005,
+    4037, 4047, 4036, 4022, 3988, 3946, 3912, 3858,
+    3784, 3710, 3633, 3546, 3446, 3344, 3221, 3046,
+    2803, 2566, 2353, 2113, 1878, 1678, 1481, 1308,
+    1191, 1088, 989, 921, 837, 727, 653, 596,
+    519, 479, 498, 538, 606, 699, 799, 919,
+    1049, 1174, 1286, 1387, 1485, 1579, 1642, 1695,
+    1788, 1878, 1921, 1960, 2014, 2042, 2065, 2100,
+    2117, 2128, 2133, 2116, 2104, 2123, 2160, 2166,
+    2160, 2179, 2208, 2224, 2237, 2255, 2260, 2261,
+    2285, 2325, 2381, 2455, 2530, 2598, 2674, 2751,
+    2806, 2823, 2811, 2779, 2726, 2681, 2652, 2618,
+    2569, 2519, 2465, 2408, 2352, 2286, 2196, 2075,
+    1944, 1798, 1652, 1527, 1395, 1256, 1133, 1024,
+    935, 856, 784, 704, 619, 550, 509, 485,
+    458, 435, 419, 429, 462, 503, 547, 591,
+    633, 673, 727, 792, 851, 912, 984, 1059,
+    1136, 1222, 1305, 1377, 1427, 1460, 1488, 1512,
+    1532, 1549, 1570, 1601, 1635, 1683, 1734, 1790,
+    1841, 1867, 1888, 1905, 1912, 1910, 1904, 1894,
+    1890, 1904, 1926, 1936, 1943, 1950, 1957, 1959,
+    1952, 1930, 1901, 1864, 1822, 1795, 1773, 1754,
+    1730, 1700, 1677, 1663, 1646, 1629, 1627, 1634,
+    1652, 1687, 1739, 1801, 1868, 1938, 2004, 2077,
+    2152, 2223, 2290, 2356, 2436, 2523, 2615, 2721,
+    2831, 2939, 3034, 3118, 3199, 3263, 3307, 3338,
+    3360, 3385, 3412, 3443, 3484, 3532, 3590, 3636,
+    3678, 3741, 3795, 3823, 3843, 3860, 3869, 3883,
+    3905, 3922, 3931, 3949, 3961, 3967, 3971, 3950,
+    3917, 3867, 3796, 3725, 3641, 3527, 3364, 3145,
+    2925, 2727, 2501, 2257, 2038, 1833, 1624, 1458,
+    1332, 1208, 1102, 997, 875, 772, 695, 608,
+    539, 519, 519, 538, 589, 658, 758, 881,
+    1002, 1121, 1249, 1370, 1484, 1576, 1646, 1729,
+    1821, 1872, 1910, 1966, 2011, 2047, 2093, 2135,
+    2168, 2194, 2196, 2185, 2192, 2210, 2209, 2187,
+    2176, 2179, 2183, 2183, 2191, 2198, 2198, 2214,
+    2249, 2296, 2358, 2432, 2503, 2580, 2662, 2731,
+    2778, 2798, 2799, 2781, 2760, 2744, 2719, 2690,
+    2660, 2627, 2593, 2566, 2531, 2471, 2388, 2293,
+    2188, 2074, 1965, 1850, 1725, 1591, 1448, 1321,
+    1214, 1114, 1024, 945, 875, 819, 781, 749,
+    711, 677, 640, 606, 595, 587, 579, 581,
+    595, 622, 669, 735, 803, 875, 950, 1028,
+    1106, 1177, 1229, 1266, 1295, 1321, 1350, 1381,
+    1407, 1440, 1481, 1528, 1587, 1654, 1716, 1771,
+    1812, 1836, 1853, 1871, 1877, 1876, 1877, 1878,
+    1887, 1903, 1917, 1932, 1943, 1947, 1954, 1959,
+    1961, 1953, 1935, 1911, 1883, 1851, 1812, 1763,
+    1708, 1651, 1605, 1568, 1536, 1512, 1488, 1474,
+    1470, 1482, 1502, 1527, 1554, 1580, 1608, 1649,
+    1698, 1750, 1808, 1878, 1960, 2048, 2149, 2257,
+    2358, 2448, 2534, 2620, 2711, 2796, 2863, 2917,
+    2964, 3004, 3034, 3064, 3108, 3140, 3164, 3205,
+    3250, 3293, 3327, 3355, 3386, 3423, 3462, 3484,
+    3508, 3534, 3552, 3569, 3604, 3639, 3672, 3707,
+    3737, 3772, 3803, 3829, 3844, 3850, 3840, 3814,
+    3772, 3714, 3647, 3559, 3425, 3233, 3027, 2851,
+    2657, 2445, 2257, 2089, 1918, 1770, 1645, 1522,
+    1414, 1300, 1158, 1036, 939, 826, 725, 680,
+    664, 668, 707, 755, 830, 935, 1031, 1122,
+    1213, 1296, 1373, 1440, 1486, 1558, 1641, 1689,
+    1732, 1791, 1842, 1889, 1940, 1977, 2013, 2045,
+    2051, 2040, 2045, 2053, 2046, 2029, 2016, 2016,
+    2020, 2012, 2010, 2013, 2013, 2034, 2069, 2111,
+    2173, 2244, 2312, 2387, 2472, 2545, 2598, 2627,
+    2643, 2655, 2658, 2667, 2675, 2678, 2686, 2699,
+    2704, 2707, 2705, 2682, 2629, 2562, 2483, 2394,
+    2306, 2212, 2115, 2022, 1933, 1845, 1755, 1661,
+    1569, 1481, 1391, 1305, 1234, 1166, 1093, 1024,
+    968, 922, 897, 866, 837, 821, 809, 795,
+    792, 812, 829, 848, 872, 913, 966, 1020,
+    1062, 1098, 1135, 1167, 1191, 1217, 1244, 1277,
+    1316, 1357, 1410, 1472, 1532, 1583, 1633, 1677,
+    1716, 1747, 1761, 1770, 1783, 1802, 1821, 1844,
+    1872, 1897, 1918, 1929, 1934, 1937, 1934, 1922,
+    1908, 1891, 1875, 1863, 1849, 1833, 1815, 1797,
+    1774, 1753, 1730, 1706, 1679, 1652, 1636, 1622,
+    1616, 1617, 1624, 1633, 1648, 1671, 1695, 1721,
+    1752, 1794, 1843, 1894, 1958, 2022, 2084, 2144,
+    2203, 2264, 2320, 2372, 2412, 2457, 2501, 2538,
+    2577, 2616, 2651, 2683, 2711, 2736, 2764, 2789,
+    2798, 2808, 2817, 2824, 2838, 2858, 2873, 2897,
+    2921, 2939, 2971, 3004, 3030, 3054, 3079, 3104,
+    3131, 3168, 3202, 3242, 3282, 3308, 3342, 3376,
+    3408, 3432, 3444, 3445, 3442, 3428, 3404, 3378,
+    3344, 3295, 3219, 3110, 2992, 2886, 2763, 2622,
+    2498, 2377, 2254, 2155, 2056, 1960, 1891, 1803,
+    1704, 1622, 1549, 1471, 1411, 1370, 1342, 1334,
+    1331, 1342, 1378, 1427, 1475, 1521, 1557, 1594,
+    1638, 1671, 1699, 1738, 1774, 1794, 1821, 1855,
+    1876, 1905, 1924, 1930, 1937, 1943, 1935, 1919,
+    1905, 1898, 1885, 1871, 1865, 1867, 1867, 1863,
+    1862, 1859, 1865, 1878, 1891, 1909, 1942, 1989,
+    2040, 2100, 2166, 2229, 2279, 2325, 2362, 2394,
+    2427, 2458, 2478, 2496, 2523, 2549, 2567, 2590,
+    2601, 2602, 2588, 2564, 2529, 2490, 2444, 2390,
+    2334, 2279, 2227, 2174, 2121, 2068, 2014, 1954,
+    1887, 1820, 1760, 1701, 1638, 1580, 1524, 1479,
+    1444, 1415, 1391, 1372, 1355, 1338, 1322, 1314,
+    1304, 1293, 1293, 1302, 1311, 1328, 1351, 1377,
+    1413, 1450, 1478, 1506, 1535, 1567, 1604, 1641,
+    1678, 1714, 1746, 1777, 1808, 1834, 1856, 1867,
+    1870, 1869, 1870, 1866, 1856, 1852, 1852, 1853,
+    1858, 1861, 1865, 1868, 1872, 1880, 1883, 1885,
+    1885, 1886, 1887, 1888, 1891, 1895, 1895, 1888,
+    1885, 1881, 1872, 1860, 1841, 1834, 1823, 1813,
+    1809, 1804, 1803, 1804, 1810, 1817, 1825, 1836,
+    1847, 1857, 1870, 1888, 1904, 1919, 1937, 1960,
+    1983, 2004, 2026, 2045, 2066, 2084, 2098, 2115,
+    2132, 2150, 2169, 2185, 2206, 2227, 2243, 2257,
+    2271, 2285, 2295, 2302, 2309, 2316, 2323, 2333,
+    2347, 2361, 2379, 2395, 2410, 2421, 2436, 2449,
+    2465, 2480, 2491, 2500, 2513, 2525, 2538, 2557,
+    2577, 2595, 2613, 2632, 2651, 2674, 2691, 2710,
+    2727, 2745, 2758, 2769, 2785, 2800, 2810, 2816,
+    2826, 2832, 2828, 2823, 2817, 2805, 2797, 2779,
+    2750, 2716, 2684, 2650, 2609, 2569, 2528, 2485,
+    2447, 2408, 2377, 2351, 2323, 2301, 2281, 2267,
+    2257, 2247, 2241, 2243, 2247, 2247, 2253, 2259,
+    2270, 2289, 2301, 2308, 2320, 2331, 2341, 2346,
+    2348, 2350, 2347, 2338, 2330, 2321, 2311, 2302,
+    2290, 2271, 2256, 2239, 2211, 2183, 2161, 2140,
+    2115, 2087, 2064, 2047, 2029, 2015, 2001, 1988,
+    1980, 1971, 1959, 1954, 1955, 1956, 1962, 1970,
+    1978, 1987, 1995, 1998, 2001, 2003, 2000, 1997,
+    1989, 1984, 1980, 1973, 1967, 1963, 1958, 1947,
+    1939, 1929, 1917, 1905, 1893, 1880, 1869, 1860,
+    1850, 1841, 1833, 1827, 1820, 1820, 1821, 1822,
+    1824, 1824, 1822, 1824, 1830, 1831, 1837, 1849,
+    1857, 1864, 1874, 1880, 1884, 1894, 1902, 1901,
+    1900, 1900, 1903, 1909, 1910, 1909, 1901, 1895,
+    1891, 1884, 1875, 1867, 1854, 1839, 1829, 1821,
+    1811, 1803, 1791, 1779, 1774, 1764, 1751, 1735,
+    1724, 1714, 1703, 1693, 1684, 1676, 1669, 1663,
+    1659, 1656, 1655, 1653, 1650, 1650, 1651, 1652,
+    1652, 1652, 1654, 1656, 1661, 1670, 1677, 1681,
+    1690, 1700, 1711, 1719, 1729, 1742, 1750, 1761,
+    1771, 1782, 1793, 1803, 1815, 1826, 1836, 1849,
+    1861, 1874, 1884, 1894, 1910, 1921, 1934, 1947,
+    1960, 1969, 1980, 1995, 2005, 2014, 2022, 2029,
+    2035, 2040, 2048, 2054, 2059, 2066, 2074, 2082,
+    2088, 2091, 2096, 2102, 2100, 2101, 2104, 2107,
+    2113, 2121, 2131, 2136, 2140, 2145, 2148, 2151,
+    2156, 2162, 2165, 2170, 2175, 2179, 2184, 2191,
+    2198, 2206, 2219, 2229, 2240, 2252, 2268, 2282,
+    2295, 2310, 2328, 2346, 2364, 2383, 2402, 2420,
+    2439, 2456, 2472, 2489, 2503, 2516, 2530, 2545,
+    2561, 2575, 2587, 2595, 2602, 2610, 2615, 2620,
+    2620, 2619, 2615, 2612, 2609, 2600, 2594, 2583,
+    2571, 2559, 2545, 2531, 2513, 2496, 2477, 2465,
+    2451, 2438, 2426, 2409, 2395, 2385, 2369, 2354,
+    2344, 2332, 2321, 2310, 2299, 2293, 2289, 2284,
+    2277, 2265, 2256, 2249, 2234, 2223, 2215, 2201,
+    2189, 2180, 2169, 2158, 2148, 2136, 2120, 2105,
+    2091, 2073, 2053, 2034, 2016, 1998, 1982, 1968,
+    1959, 1946, 1936, 1929, 1919, 1914, 1909, 1902,
+    1899, 1894, 1892, 1890, 1891, 1894, 1895, 1897,
+    1895, 1895, 1892, 1892, 1888, 1882, 1877, 1872,
+    1869, 1862, 1859, 1858, 1854, 1849, 1843, 1837,
+    1828, 1821, 1813, 1801, 1788, 1781, 1772, 1763,
+    1752, 1745, 1735, 1724, 1713, 1704, 1693, 1685,
+    1677, 1671, 1667, 1667, 1668, 1668, 1670, 1674,
+    1678, 1680, 1681, 1683, 1686, 1688, 1689, 1694,
+    1696, 1694, 1694, 1700, 1704, 1707, 1711, 1717,
+    1721, 1730, 1736, 1741, 1746, 1753, 1760, 1765,
+    1775, 1782, 1786, 1793, 1798, 1803, 1811, 1815,
+    1822, 1830, 1836, 1844, 1852, 1857, 1864, 1870,
+    1873, 1878, 1883, 1885, 1888, 1893, 1894, 1900,
+    1905, 1908, 1912, 1916, 1921, 1925, 1927, 1931,
+    1936, 1935, 1940, 1945, 1945, 1946, 1952, 1955,
+    1958, 1963, 1965, 1967, 1970, 1969, 1969, 1974,
+    1974, 1973, 1974, 1975, 1977, 1979, 1983, 1984,
+    1989, 1996, 2002, 2002, 2007, 2016, 2021, 2022,
+    2029, 2038, 2039, 2041, 2049, 2051, 2054, 2058,
+    2063, 2065, 2072, 2079, 2084, 2091, 2100, 2109,
+    2114, 2122, 2128, 2135, 2142, 2153, 2162, 2167,
+    2179, 2191, 2195, 2204, 2215, 2222, 2233, 2244,
+    2253, 2259, 2267, 2275, 2281, 2289, 2297, 2302,
+    2301, 2308, 2316, 2316, 2321, 2324, 2324, 2329,
+    2334, 2335, 2337, 2339, 2339, 2341, 2342, 2344,
+    2344, 2345, 2346, 2349, 2348, 2349, 2350, 2351,
+    2350, 2351, 2352, 2350, 2350, 2351, 2347, 2346,
+    2346, 2346, 2340, 2339, 2340, 2341, 2337, 2335,
+    2335, 2329, 2327, 2324, 2322, 2318, 2318, 2315,
+    2311, 2309, 2305, 2303, 2300, 2303, 2301, 2295,
+    2292, 2290, 2286, 2282, 2277, 2272, 2267, 2256,
+    2248, 2242, 2231, 2220, 2207, 2196, 2185, 2176,
+    2166, 2153, 2144, 2132, 2121, 2111, 2100, 2087,
+    2074, 2060, 2051, 2042, 2030, 2025, 2015, 2005,
+    1998, 1993, 1985, 1978, 1969, 1960, 1954, 1947,
+    1940, 1932, 1928, 1921, 1915, 1912, 1904, 1899,
+    1892, 1889, 1887, 1879, 1873, 1866, 1860, 1852,
+    1848, 1842, 1837, 1835, 1833, 1832, 1828, 1827,
+    1826, 1825, 1825, 1824, 1823, 1827, 1829, 1830,
+    1833, 1835, 1839, 1841, 1843, 1842, 1846, 1848,
+    1851, 1853, 1857, 1863, 1866, 1870, 1871, 1875,
+    1877, 1879, 1880, 1881, 1882, 1882, 1883, 1882,
+    1884, 1885, 1886, 1886, 1889, 1890, 1890, 1893,
+    1893, 1891, 1891, 1893, 1892, 1894, 1896, 1897,
+    1900, 1904, 1908, 1913, 1913, 1914, 1919, 1919,
+    1923, 1929, 1932, 1937, 1940, 1945, 1949, 1953,
+    1955, 1958, 1962, 1967, 1973, 1976, 1977, 1982,
+    1986, 1989, 1993, 1999, 2001, 2007, 2009, 2012,
+    2018, 2022, 2025, 2033, 2040, 2045, 2051, 2059,
+    2064, 2073, 2081, 2082, 2092, 2098, 2105, 2111,
+    2116, 2121, 2128, 2133, 2136, 2139, 2142, 2146,
+    2152, 2156, 2158, 2161, 2167, 2165, 2169, 2173,
+    2174, 2179, 2175, 2176, 2179, 2181, 2184, 2185,
+    2186, 2188, 2191, 2189, 2190, 2190, 2191, 2193,
+    2197, 2197, 2196, 2199, 2199, 2199, 2201, 2203,
+    2205, 2208, 2210, 2212, 2214, 2216, 2219, 2222,
+    2222, 2227, 2229, 2229, 2233, 2234, 2236, 2238,
+    2240, 2242, 2244, 2248, 2249, 2251, 2250, 2250,
+    2251, 2248, 2248, 2247, 2248, 2250, 2250, 2248,
+    2247, 2247, 2247, 2247, 2248, 2250, 2252, 2253,
+    2253, 2254, 2256, 2258, 2257, 2257, 2256, 2259,
+    2258, 2257, 2257, 2256, 2253, 2256, 2258, 2254,
+    2251, 2247, 2245, 2243, 2240, 2236, 2231, 2227,
+    2224, 2221, 2217, 2215, 2214, 2210, 2206, 2202,
+    2200, 2199, 2193, 2190, 2186, 2182, 2180, 2175,
+    2171, 2168, 2162, 2157, 2152, 2148, 2144, 2139,
+    2131, 2125, 2118, 2113, 2109, 2104, 2099, 2095,
+    2090, 2087, 2082, 2076, 2070, 2068, 2065, 2056,
+    2052, 2051, 2048, 2048, 2043, 2041, 2037, 2034,
+    2030, 2026, 2023, 2021, 2020, 2017, 2014, 2011,
+    2009, 2005, 2004, 2003, 2002, 2001, 2000, 1995,
+    1993, 1992, 1987, 1984, 1984, 1979, 1976, 1972,
+    1967, 1966, 1962, 1960, 1957, 1956, 1956, 1955,
+    1953, 1951, 1949, 1946, 1944, 1942, 1938, 1936,
+    1937, 1934, 1932, 1932, 1930, 1928, 1929, 1926,
+    1925, 1925, 1923, 1923, 1922, 1919, 1922, 1920,
+    1920, 1921, 1919, 1924, 1926, 1928, 1929, 1929,
+    1934, 1936, 1936, 1937, 1937, 1939, 1939, 1943,
+    1944, 1947, 1948, 1950, 1952, 1955, 1959, 1959,
+    1963, 1964, 1967, 1970, 1972, 1975, 1978, 1981,
+    1985, 1985, 1991, 1994, 1997, 2002, 2007, 2013,
+    2016, 2022, 2025, 2028, 2031, 2032, 2033, 2035,
+    2040, 2043, 2046, 2049, 2053, 2052, 2052, 2051,
+    2050, 2052, 2054, 2053, 2053, 2058, 2062, 2063,
+    2064, 2066, 2068, 2066, 2069, 2070, 2071, 2073,
+    2074, 2074, 2076, 2076, 2076, 2078, 2077, 2079,
+    2078, 2079, 2079, 2078, 2078, 2077, 2074, 2074,
+    2073, 2074, 2070, 2068, 2070, 2069, 2067, 2067,
+    2064, 2064, 2066, 2065, 2065, 2064, 2063, 2066,
+    2066, 2066, 2064, 2065, 2067, 2065, 2067, 2068,
+    2067, 2067, 2068, 2068, 2068, 2068, 2069, 2069,
+    2071, 2071, 2072, 2075, 2076, 2076, 2076, 2076,
+    2076, 2077, 2078, 2080, 2082, 2084, 2087, 2089,
+    2090, 2091, 2091, 2093, 2091, 2093, 2097, 2097,
+    2098, 2100, 2102, 2102, 2105, 2104, 2103, 2103,
+    2105, 2105, 2111, 2112, 2109, 2111, 2111, 2110,
+    2108, 2108, 2109, 2110, 2112, 2110, 2106, 2106,
+    2106, 2106, 2101, 2102, 2103, 2101, 2098, 2098,
+    2098, 2096, 2092, 2092, 2088, 2089, 2085, 2082,
+    2081, 2077, 2074, 2069, 2068, 2062, 2058, 2057,
+    2054, 2051, 2048, 2046, 2042, 2041, 2037, 2037,
+    2031, 2026, 2026, 2021, 2018, 2015, 2011, 2006,
+    2000, 1999, 1994, 1991, 1986, 1983, 1984, 1982,
+    1980, 1978, 1978, 1977, 1976, 1975, 1973, 1974,
+    1974, 1974, 1974, 1974, 1977, 1978, 1977, 1976,
+    1976, 1977, 1976, 1978, 1981, 1982, 1980, 1983,
+    1984, 1985, 1986, 1985, 1982, 1983, 1983, 1984,
+    1984, 1987, 1984, 1983, 1984, 1980, 1979, 1984,
+    1981, 1980, 1983, 1985, 1984, 1984, 1982, 1982,
+    1987, 1987, 1986, 1992, 1989, 1989, 1998, 2001,
+    2000, 2002, 2003, 2003, 2004, 2005, 2007, 2009,
+    2010, 2010, 2013, 2013, 2014, 2014, 2016, 2021,
+    2018, 2019, 2022, 2026, 2029, 2028, 2029, 2029,
+    2033, 2034, 2032, 2035, 2035, 2035, 2038, 2039,
+    2041, 2044, 2047, 2046, 2047, 2052, 2054, 2058,
+    2059, 2058, 2060, 2063, 2065, 2068, 2067, 2069,
+    2068, 2067, 2071, 2073, 2073, 2073, 2075, 2073,
+    2071, 2069, 2072, 2072, 2072, 2073, 2072, 2067,
+    2063, 2068, 2069, 2068, 2067, 2066, 2066, 2064,
+    2065, 2064, 2063, 2061, 2061, 2059, 2061, 2061,
+    2059, 2058, 2059, 2056, 2051, 2052, 2051, 2047,
+    2045, 2042, 2039, 2041, 2041, 2036, 2035, 2032,
+    2031, 2032, 2031, 2028, 2028, 2026, 2026, 2023,
+    2022, 2021, 2022, 2022, 2020, 2019, 2016, 2018,
+    2017, 2016, 2015, 2013, 2016, 2019, 2019, 2021,
+    2023, 2024, 2025, 2027, 2029, 2030, 2033, 2032,
+    2035, 2041, 2042, 2043, 2046, 2050, 2051, 2053,
+    2057, 2056, 2058, 2055, 2056, 2056, 2054, 2051,
+    2051, 2051, 2046, 2045, 2047, 2046, 2046, 2047,
+    2046, 2043, 2044, 2041, 2041, 2040, 2040, 2041,
+    2040, 2041, 2038, 2036, 2035, 2036, 2037, 2037,
+    2034, 2035, 2033, 2030, 2030, 2029, 2029, 2028,
+    2027, 2028, 2028, 2026, 2025, 2025, 2028, 2028,
+    2030, 2031, 2031, 2033, 2038, 2039, 2040, 2042,
+    2044, 2048, 2050, 2050, 2055, 2059, 2064, 2065,
+    2068, 2071, 2074, 2076, 2076, 2080, 2086, 2085,
+    2086, 2091, 2090, 2092, 2096, 2096, 2097, 2100,
+    2103, 2105, 2103, 2104, 2104, 2106, 2107, 2106,
+    2107, 2108, 2107, 2108, 2109, 2107, 2107, 2109,
+    2107, 2108, 2105, 2103, 2102, 2101, 2101, 2101,
+    2101, 2100, 2102, 2099, 2100, 2103, 2100, 2098,
+    2095, 2096, 2091, 2088, 2087, 2087, 2086, 2084,
+    2084, 2081, 2082, 2081, 2077, 2075, 2073, 2071,
+    2069, 2067, 2067, 2067, 2066, 2065, 2068, 2068,
+    2066, 2066, 2064, 2063, 2063, 2060, 2058, 2058,
+    2057, 2057, 2057, 2055, 2051, 2048, 2049, 2047,
+    2046, 2045, 2042, 2042, 2042, 2040, 2040, 2039,
+    2038, 2034, 2032, 2032, 2032, 2031, 2029, 2029,
+    2028, 2028, 2028, 2026, 2024, 2025, 2026, 2023,
+    2024, 2024, 2023, 2023, 2020, 2021, 2020, 2021,
+    2023, 2024, 2024, 2026, 2026, 2026, 2026, 2030,
+    2028, 2030, 2032, 2034, 2032, 2032, 2032, 2034,
+    2038, 2039, 2039, 2037, 2036, 2041, 2043, 2043,
+    2044, 2046, 2050, 2052, 2046, 2045, 2048, 2051,
+    2049, 2049, 2047, 2047, 2046, 2042, 2041, 2043,
+    2040, 2040, 2045, 2045, 2043, 2043, 2038, 2040,
+    2037, 2030, 2027, 2031, 2038, 2034, 2038, 2039,
+    2033, 2032, 2032, 2028, 2029, 2035, 2037, 2038,
+    2038, 2038, 2044, 2047, 2042, 2039, 2043, 2042,
+    2044, 2048, 2048, 2051, 2051, 2056, 2058, 2058,
+    2055, 2055, 2055, 2060, 2066, 2067, 2070, 2072,
+    2074, 2069, 2069, 2070, 2070, 2074, 2076, 2074,
+    2074, 2077, 2079, 2080, 2080, 2081, 2078, 2082,
+    2084, 2084, 2086, 2086, 2087, 2081, 2087, 2090,
+    2088, 2089, 2090, 2087, 2087, 2087, 2086, 2090,
+    2094, 2090, 2088, 2093, 2093, 2091, 2090, 2089,
+    2087, 2088, 2089, 2092, 2095, 2092, 2086, 2085,
+    2085, 2085, 2088, 2087, 2084, 2078, 2075, 2078,
+    2079, 2073, 2065, 2063, 2066, 2066, 2065, 2067,
+    2063, 2056, 2060, 2062, 2060, 2059, 2062, 2057,
+    2056, 2055, 2056, 2059, 2058, 2059, 2052, 2052,
+    2054, 2054, 2057, 2055, 2053, 2055, 2056, 2054,
+    2048, 2044, 2043, 2041, 2037, 2033, 2031, 2033,
+    2035, 2035, 2030, 2025, 2024, 2025, 2028, 2024,
+    2021, 2023, 2020, 2016, 2020, 2020, 2012, 2009,
+    2015, 2019, 2021, 2019, 2015, 2018, 2017, 2012,
+    2011, 2017, 2015, 2012, 2011, 2010, 2011, 2017,
+    2018, 2014, 2013, 2015, 2011, 2006, 2006, 2005,
+    2005, 2006, 2001, 2002, 2009, 2009, 2010, 2013,
+    2017, 2021, 2019, 2020, 2024, 2025, 2028, 2029,
+    2028, 2032, 2034, 2037, 2040, 2038, 2036, 2036,
+    2040, 2039, 2034, 2034, 2033, 2027, 2030, 2033,
+    2030, 2030, 2032, 2030, 2028, 2029, 2027, 2023,
+    2022, 2022, 2017, 2018, 2021, 2020, 2017, 2014,
+    2017, 2017, 2015, 2020, 2021, 2018, 2019, 2020,
+    2021, 2019, 2017, 2017, 2018, 2021, 2021, 2021,
+    2024, 2029, 2031, 2035, 2035, 2035, 2036, 2035,
+    2038, 2043, 2047, 2048, 2046, 2043, 2045, 2047,
+    2046, 2047, 2047, 2048, 2051, 2052, 2052, 2052,
+    2052, 2051, 2052, 2050, 2045, 2047, 2050, 2048,
+    2049, 2048, 2046, 2050, 2051, 2051, 2052, 2052,
+    2055, 2056, 2056, 2055, 2060, 2061, 2057, 2061,
+    2064, 2064, 2061, 2061, 2060, 2064, 2064, 2065,
+    2068, 2067, 2066, 2066, 2067, 2069, 2070, 2068,
+    2069, 2069, 2069, 2073, 2074, 2074, 2075, 2078,
+    2082, 2081, 2079, 2084, 2088, 2086, 2085, 2088,
+    2091, 2092, 2096, 2100, 2107, 2109, 2110, 2110,
+    2113, 2112, 2110, 2114, 2116, 2116, 2116, 2115,
+    2114, 2112, 2109, 2110, 2111, 2112, 2112, 2109,
+    2108, 2108, 2111, 2113, 2113, 2111, 2109, 2107,
+    2107, 2106, 2106, 2106, 2106, 2104, 2100, 2105,
+    2105, 2101, 2104, 2104, 2104, 2103, 2098, 2096,
+    2100, 2102, 2098, 2098, 2097, 2094, 2094, 2091,
+    2089, 2090, 2091, 2091, 2087, 2086, 2086, 2086,
+    2087, 2088, 2085, 2082, 2079, 2078, 2079, 2077,
+    2079, 2077, 2078, 2078, 2077, 2078, 2083, 2083,
+    2082, 2082, 2085, 2086, 2092, 2095, 2092, 2092,
+    2096, 2096, 2100, 2102, 2103, 2106, 2108, 2106,
+    2104, 2106, 2108, 2109, 2108, 2108, 2106, 2106,
+    2103, 2103, 2105, 2103, 2102, 2099, 2098, 2101,
+    2101, 2103, 2104, 2107, 2106, 2105, 2106, 2108,
+    2108, 2107, 2107, 2106, 2109, 2111, 2108, 2107,
+    2107, 2108, 2104, 2105, 2104, 2102, 2101, 2103,
+    2107, 2103, 2101, 2099, 2096, 2097, 2098, 2098,
+    2098, 2098, 2098, 2100, 2099, 2098, 2099, 2098,
+    2098, 2100, 2102, 2099, 2098, 2096, 2095, 2097,
+    2094, 2095, 2092, 2086, 2081, 2079, 2070, 2063,
+    2053, 2046, 1902, 1613, 1570, 1719, 1812, 1882,
+    1946, 1964, 1959, 1931, 1918, 1942, 1980, 2003,
+    2025, 2040, 2049, 2063, 2059, 2053, 2062, 2086,
+    2102, 2119, 2114, 2081, 2034, 2009, 2013, 2033,
+    2068, 2109, 2134, 2126, 2096, 2053, 2007, 1980,
+    1980, 2016, 2063, 2086, 2092, 2088, 2082, 2065,
+    2051, 2037, 2030, 2040, 2056, 2065, 2048, 2026,
+    2014, 2015, 2032, 2054, 2075, 2080, 2069, 2054,
+    2031, 2011, 1994, 1982, 1987, 2005, 2030, 2055,
+    2064, 2037, 1997, 1967, 1965, 1984, 2004, 2011,
+    2007, 2002, 1993, 1985, 1985, 1984, 1985, 1988,
+    1994, 1991, 1979, 1960, 1946, 1938, 1931, 1937,
+    1952, 1972, 1984, 1979, 1953, 1927, 1909, 1894,
+    1897, 1914, 1932, 1939, 1932, 1920, 1914, 1907,
+    1913, 1933, 1944, 1937, 1933, 1935, 1925, 1916,
+    1909, 1909, 1918, 1936, 1954, 1958, 1953, 1941,
+    1927, 1914, 1908, 1925, 1941, 1949, 1955, 1954,
+    1950, 1946, 1940, 1929, 1926, 1929, 1937, 1945,
+    1950, 1942, 1932, 1925, 1928, 1940, 1947, 1950,
+    1951, 1947, 1937, 1924, 1922, 1928, 1931, 1939,
+    1947, 1950, 1948, 1941, 1938, 1932, 1927, 1924,
+    1926, 1929, 1929, 1931, 1928, 1915, 1909, 1906,
+    1909, 1914, 1919, 1921, 1919, 1912, 1903, 1897,
+    1899, 1901, 1906, 1909, 1901, 1896, 1897, 1896,
+    1893, 1887, 1880, 1884, 1884, 1878, 1878, 1881,
+    1875, 1866, 1863, 1854, 1852, 1860, 1865, 1861,
+    1853, 1859, 1865, 1865, 1858, 1859, 1858, 1853,
+    1852, 1849, 1848, 1846, 1845, 1841, 1830, 1820,
+    1827, 1834, 1827, 1828, 1826, 1806, 1804, 1805,
+    1806, 1818, 1818, 1813, 1814, 1808, 1804, 1806,
+    1813, 1816, 1820, 1821, 1816, 1815, 1813, 1814,
+    1818, 1823, 1831, 1841, 1844, 1831, 1825, 1825,
+    1821, 1826, 1827, 1827, 1831, 1836, 1841, 1840,
+    1830, 1834, 1843, 1845, 1851, 1855, 1849, 1842,
+    1839, 1838, 1837, 1841, 1841, 1842, 1842, 1836,
+    1830, 1826, 1830, 1842, 1846, 1855, 1864, 1860,
+    1859, 1857, 1850, 1853, 1859, 1858, 1862, 1867,
+    1868, 1862, 1850, 1842, 1842, 1839, 1847, 1864,
+    1870, 1869, 1870, 1862, 1850, 1842, 1846, 1856,
+    1859, 1866, 1870, 1866, 1857, 1847, 1844, 1848,
+    1858, 1863, 1863, 1861, 1856, 1853, 1858, 1867,
+    1873, 1883, 1889, 1892, 1891, 1885, 1884, 1886,
+    1891, 1904, 1919, 1925, 1924, 1919, 1911, 1904,
+    1894, 1894, 1904, 1915, 1927, 1936, 1937, 1936,
+    1926, 1918, 1920, 1926, 1931, 1938, 1937, 1935,
+    1936, 1946, 1958, 1962, 1965, 1963, 1953, 1950,
+    1947, 1935, 1923, 1914, 1911, 1914, 1925, 1931,
+    1933, 1934, 1927, 1923, 1921, 1926, 1926, 1924,
+    1929, 1938, 1952, 1956, 1956, 1959, 1957, 1960,
+    1964, 1958, 1946, 1947, 1953, 1960, 1969, 1977,
+    1983, 1981, 1975, 1965, 1955, 1948, 1937, 1921,
+    1916, 1922, 1931, 1945, 1954, 1960, 1957, 1944,
+    1927, 1922, 1923, 1925, 1929, 1932, 1943, 1952,
+    1960, 1958, 1953, 1953, 1939, 1914, 1901, 1887,
+    1880, 1878, 1878, 1883, 1881, 1882, 1888, 1896,
+    1895, 1879, 1864, 1846, 1829, 1831, 1842, 1846,
+    1851, 1867, 1873, 1866, 1852, 1838, 1834, 1833,
+    1831, 1828, 1823, 1820, 1829, 1836, 1838, 1838,
+    1837, 1827, 1814, 1801, 1801, 1802, 1797, 1797,
+    1814, 1830, 1837, 1844, 1847, 1840, 1830, 1818,
+    1803, 1797, 1801, 1811, 1823, 1838, 1837, 1823,
+    1810, 1798, 1783, 1765, 1744, 1723, 1708, 1701,
+    1701, 1715, 1728, 1737, 1731, 1725, 1723, 1719,
+    1700, 1679, 1672, 1671, 1668, 1672, 1678, 1683,
+    1692, 1698, 1695, 1684, 1671, 1662, 1660, 1653,
+    1641, 1639, 1644, 1657, 1672, 1668, 1647, 1632,
+    1626, 1617, 1598, 1584, 1588, 1597, 1603, 1613,
+    1622, 1621, 1614, 1606, 1600, 1592, 1575, 1551,
+    1537, 1531, 1525, 1531, 1557, 1573, 1574, 1571,
+    1571, 1568, 1558, 1561, 1554, 1538, 1531, 1539,
+    1553, 1560, 1558, 1547, 1531, 1511, 1498, 1493,
+    1491, 1500, 1509, 1508, 1505, 1502, 1505, 1519,
+    1531, 1527, 1524, 1529, 1524, 1513, 1517, 1521,
+    1527, 1547, 1569, 1592, 1598, 1587, 1569, 1553,
+    1538, 1528, 1531, 1538, 1540, 1540, 1544, 1552,
+    1552, 1552, 1551, 1557, 1560, 1557, 1557, 1550,
+    1535, 1513, 1493, 1501, 1524, 1536, 1543, 1542,
+    1534, 1531, 1533, 1544, 1568, 1596, 1616, 1636,
+    1653, 1658, 1654, 1647, 1641, 1634, 1637, 1632,
+    1630, 1634, 1634, 1637, 1639, 1639, 1650, 1674,
+    1689, 1687, 1672, 1663, 1647, 1635, 1646, 1661,
+    1680, 1707, 1728, 1731, 1732, 1727, 1710, 1702,
+    1711, 1730, 1758, 1770, 1772, 1779, 1778, 1776,
+    1793, 1811, 1815, 1822, 1828, 1821, 1811, 1809,
+    1812, 1828, 1852, 1871, 1891, 1899, 1881, 1856,
+    1837, 1828, 1834, 1853, 1882, 1912, 1930, 1936,
+    1931, 1924, 1934, 1962, 1991, 2007, 2007, 2003,
+    2001, 1999, 2015, 2038, 2066, 2093, 2112, 2120,
+    2119, 2112, 2104, 2106, 2123, 2136, 2155, 2178,
+    2195, 2188, 2162, 2145, 2144, 2148, 2160, 2180,
+    2194, 2201, 2196, 2189, 2186, 2197, 2213, 2233,
+    2243, 2238, 2230, 2217, 2201, 2203, 2216, 2232,
+    2251, 2267, 2278, 2283, 2276, 2258, 2252, 2264,
+    2279, 2294, 2304, 2302, 2293, 2283, 2277, 2285,
+    2302, 2315, 2320, 2313, 2309, 2311, 2316, 2322,
+    2334, 2349, 2359, 2368, 2381, 2390, 2384, 2377,
+    2381, 2404, 2430, 2449, 2464, 2479, 2481, 2471,
+    2475, 2491, 2510, 2524, 2528, 2524, 2520, 2516,
+    2523, 2539, 2550, 2559, 2572, 2582, 2583, 2579,
+    2573, 2570, 2572, 2574, 2581, 2589, 2600, 2610,
+    2602, 2594, 2596, 2610, 2629, 2641, 2642, 2638,
+    2643, 2648, 2652, 2660, 2672, 2683, 2682, 2682,
+    2692, 2700, 2699, 2703, 2715, 2721, 2724, 2734,
+    2740, 2740, 2732, 2726, 2729, 2733, 2731, 2725,
+    2721, 2722, 2718, 2708, 2703, 2707, 2714, 2720,
+    2722, 2722, 2719, 2708, 2701, 2698, 2693, 2686,
+    2679, 2678, 2676, 2676, 2672, 2671, 2663, 2648,
+    2632, 2620, 2614, 2615, 2617, 2616, 2611, 2609,
+    2603, 2592, 2586, 2587, 2590, 2594, 2590, 2584,
+    2574, 2561, 2548, 2534, 2522, 2511, 2503, 2503,
+    2501, 2496, 2488, 2488, 2486, 2484, 2492, 2504,
+    2499, 2484, 2478, 2474, 2467, 2461, 2458, 2456,
+    2449, 2438, 2429, 2426, 2422, 2413, 2404, 2394,
+    2387, 2390, 2392, 2392, 2389, 2382, 2375, 2372,
+    2367, 2355, 2347, 2346, 2344, 2340, 2333, 2325,
+    2317, 2313, 2307, 2303, 2307, 2305, 2297, 2292,
+    2288, 2282, 2280, 2282, 2289, 2295, 2298, 2289,
+    2276, 2262, 2254, 2253, 2254, 2252, 2249, 2246,
+    2234, 2221, 2213, 2214, 2208, 2198, 2192, 2194,
+    2190, 2179, 2169, 2167, 2166, 2167, 2167, 2163,
+    2155, 2144, 2133, 2130, 2130, 2127, 2123, 2124,
+    2124, 2120, 2120, 2116, 2112, 2114, 2116, 2103,
+    2083, 2074, 2068, 2068, 2069, 2079, 2093, 2098,
+    2089, 2085, 2088, 2090, 2084, 2075, 2074, 2075,
+    2079, 2081, 2079, 2075, 2076, 2086, 2096, 2099,
+    2104, 2107, 2109, 2112, 2112, 2111, 2113, 2119,
+    2123, 2128, 2131, 2130, 2123, 2117, 2118, 2120,
+    2125, 2128, 2134, 2135, 2139, 2137, 2131, 2126,
+    2123, 2127, 2127, 2126, 2121, 2119, 2114, 2115,
+    2118, 2121, 2123, 2123, 2123, 2119, 2113, 2110,
+    2107, 2102, 2102, 2105, 2109, 2109, 2099, 2085,
+    2077, 2076, 2081, 2087, 2097, 2101, 2102, 2103,
+    2104, 2103, 2104, 2108, 2111, 2112, 2111, 2109,
+    2106, 2100, 2097, 2095, 2089, 2094, 2094, 2085,
+    2074, 2067, 2058, 2053, 2056, 2058, 2056, 2052,
+    2044, 2038, 2030, 2023, 2024, 2027, 2028, 2026,
+    2019, 2015, 2020, 2022, 2020, 2013, 2013, 2010,
+    2005, 2005, 2007, 2009, 2017, 2019, 2020, 2020,
+    2021, 2021, 2019, 2015, 2019, 2023, 2031, 2039,
+    2044, 2046, 2042, 2041, 2039, 2042, 2039, 2034,
+    2030, 2025, 2019, 2020, 2022, 2026, 2028, 2026,
+    2017, 2007, 1996, 1983, 1981, 1984, 1984, 1976,
+    1973, 1974, 1966, 1953, 1947, 1948, 1947, 1943,
+    1933, 1922, 1911, 1905, 1911, 1918, 1924, 1934,
+    1942, 1938, 1933, 1927, 1928, 1932, 1937, 1950,
+    1960, 1963, 1961, 1960, 1964, 1962, 1959, 1963,
+    1964, 1956, 1946, 1936, 1935, 1931, 1925, 1926,
+    1935, 1935, 1927, 1914, 1905, 1899, 1901, 1907,
+    1910, 1912, 1910, 1908, 1908, 1909, 1914, 1918,
+    1917, 1912, 1909, 1911, 1909, 1905, 1909, 1921,
+    1931, 1936, 1938, 1940, 1942, 1937, 1934, 1926,
+    1929, 1948, 1961, 1960, 1960, 1963, 1963, 1957,
+    1954, 1955, 1955, 1953, 1950, 1948, 1953, 1959,
+    1956, 1945, 1945, 1952, 1951, 1941, 1929, 1923,
+    1926, 1931, 1933, 1940, 1959, 1969, 1961, 1949,
+    1948, 1956, 1955, 1955, 1952, 1952, 1957, 1961,
+    1968, 1977, 1986, 1991, 1985, 1987, 1991, 1988,
+    1989, 1996, 2004, 2010, 2019, 2036, 2048, 2048,
+    2044, 2041, 2040, 2048, 2062, 2075, 2078, 2074,
+    2080, 2092, 2105, 2118, 2129, 2129, 2123, 2130,
+    2141, 2144, 2148, 2163, 2173, 2168, 2169, 2179,
+    2187, 2187, 2182, 2179, 2178, 2183, 2181, 2182,
+    2190, 2202, 2204, 2195, 2194, 2196, 2198, 2197,
+    2193, 2187, 2186, 2189, 2192, 2196, 2199, 2201,
+    2198, 2196, 2201, 2201, 2196, 2191, 2193, 2202,
+    2216, 2225, 2226, 2224, 2223, 2229, 2231, 2231,
+    2236, 2241, 2242, 2240, 2251, 2260, 2265, 2267,
+    2277, 2277, 2271, 2278, 2290, 2294, 2292, 2293,
+    2301, 2308, 2320, 2332, 2339, 2336, 2327, 2320,
+    2330, 2349, 2359, 2361, 2361, 2364, 2361, 2366,
+    2371, 2378, 2380, 2379, 2374, 2367, 2367, 2370,
+    2375, 2376, 2373, 2374, 2376, 2366, 2361, 2363,
+    2362, 2358, 2354, 2351, 2355, 2360, 2359, 2361,
+    2364, 2368, 2372, 2374, 2376, 2378, 2382, 2385,
+    2393, 2400, 2400, 2393, 2394, 2399, 2399, 2397,
+    2397, 2398, 2399, 2399, 2406, 2415, 2414, 2408,
+    2402, 2405, 2408, 2405, 2404, 2404, 2404, 2410,
+    2414, 2417, 2423, 2419, 2419, 2420, 2418, 2420,
+    2423, 2423, 2420, 2424, 2421, 2420, 2426, 2431,
+    2429, 2423, 2417, 2413, 2413, 2413, 2420, 2425,
+    2424, 2424, 2419, 2416, 2417, 2422, 2418, 2420,
+    2423, 2423, 2422, 2426, 2436, 2441, 2442, 2444,
+    2446, 2446, 2442, 2443, 2446, 2449, 2446, 2445,
+    2449, 2454, 2459, 2457, 2453, 2451, 2448, 2443,
+    2441, 2445, 2447, 2449, 2450, 2452, 2455, 2459,
+    2457, 2451, 2444, 2439, 2439, 2441, 2448, 2453,
+    2455, 2462, 2468, 2471, 2476, 2482, 2486, 2490,
+    2486, 2488, 2493, 2500, 2511, 2517, 2520, 2518,
+    2521, 2526, 2525, 2521, 2528, 2539, 2545, 2547,
+    2554, 2562, 2568, 2573, 2578, 2581, 2586, 2592,
+    2596, 2600, 2607, 2612, 2619, 2631, 2639, 2641,
+    2639, 2635, 2634, 2639, 2647, 2647, 2645, 2651,
+    2650, 2649, 2646, 2635, 2628, 2628, 2627, 2621,
+    2614, 2604, 2593, 2591, 2596, 2601, 2595, 2588,
+    2590, 2587, 2578, 2579, 2585, 2590, 2589, 2587,
+    2589, 2587, 2581, 2582, 2583, 2578, 2572, 2576,
+    2576, 2578, 2577, 2576, 2577, 2580, 2584, 2586,
+    2588, 2583, 2581, 2587, 2588, 2585, 2591, 2602,
+    2605, 2607, 2607, 2609, 2611, 2612, 2614, 2615,
+    2615, 2610, 2610, 2610, 2608, 2608, 2609, 2611,
+    2600, 2591, 2593, 2592, 2589, 2582, 2575, 2572,
+    2572, 2567, 2562, 2557, 2553, 2541, 2532, 2534,
+    2534, 2530, 2529, 2526, 2522, 2518, 2512, 2504,
+    2507, 2514, 2506, 2494, 2493, 2495, 2490, 2485,
+    2487, 2489, 2483, 2470, 2468, 2471, 2471, 2468,
+    2465, 2458, 2454, 2449, 2444, 2438, 2429, 2418,
+    2416, 2412, 2408, 2404, 2394, 2395, 2395, 2384,
+    2376, 2369, 2365, 2359, 2350, 2343, 2343, 2339,
+    2331, 2330, 2324, 2320, 2315, 2303, 2295, 2292,
+    2289, 2281, 2279, 2276, 2273, 2268, 2266, 2264,
+    2259, 2251, 2248, 2244, 2242, 2238, 2234, 2231,
+    2231, 2223, 2218, 2218, 2221, 2217, 2209, 2205,
+    2201, 2200, 2199, 2202, 2205, 2207, 2203, 2202,
+    2201, 2198, 2195, 2195, 2194, 2192, 2191, 2194,
+    2196, 2200, 2199, 2202, 2200, 2199, 2196, 2197,
+    2203, 2201, 2202, 2204, 2207, 2208, 2211, 2216,
+    2215, 2214, 2212, 2213, 2217, 2223, 2227, 2230,
+    2236, 2239, 2248, 2254, 2258, 2263, 2269, 2277,
+    2286, 2300, 2315, 2331, 2342, 2355, 2371, 2385,
+    2398, 2413, 2430, 2443, 2458, 2473, 2486, 2497,
+    2512, 2523, 2529, 2533, 2538, 2542, 2546, 2549,
+    2553, 2559, 2564, 2564, 2560, 2563, 2559, 2552,
+    2548, 2546, 2545, 2540, 2540, 2541, 2537, 2539,
+    2544, 2542, 2536, 2531, 2532, 2528, 2522, 2519,
+    2516, 2524, 2527, 2527, 2531, 2536, 2536, 2532,
+    2531, 2539, 2544, 2544, 2545, 2553, 2564, 2570,
+    2571, 2571, 2573, 2574, 2578, 2587, 2595, 2598,
+    2603, 2610, 2618, 2628, 2632, 2640, 2652, 2653,
+    2650, 2652, 2655, 2660, 2671, 2676, 2681, 2691,
+    2688, 2681, 2687, 2690, 2696, 2699, 2698, 2704,
+    2709, 2706, 2708, 2717, 2717, 2711, 2710, 2709,
+    2710, 2704, 2696, 2691, 2681, 2675, 2668, 2654,
+    2634, 2608, 2581, 2560, 2539, 2511, 2479, 2446,
+    2408, 2367, 2330, 2289, 2248, 2195, 2139, 2091,
+    2037, 1980, 1927, 1871, 1817, 1766, 1716, 1665,
+    1613, 1558, 1507, 1465, 1427, 1394, 1363, 1339,
+    1315, 1291, 1276, 1266, 1257, 1252, 1253, 1260,
+    1271, 1279, 1294, 1316, 1338, 1365, 1393, 1420,
+    1443, 1471, 1502, 1534, 1568, 1599, 1629, 1655,
+    1681, 1709, 1734, 1755, 1774, 1789, 1803, 1818,
+    1828, 1841, 1851, 1855, 1859, 1862, 1864, 1869,
+    1868, 1860, 1856, 1850, 1845, 1842, 1837, 1832,
+    1824, 1818, 1807, 1802, 1794, 1792, 1786, 1778,
+    1773, 1767, 1767, 1769, 1772, 1773, 1772, 1773,
+    1777, 1782, 1788, 1799, 1816, 1836, 1857, 1880,
+    1905, 1928, 1951, 1974, 2000, 2027, 2055, 2085,
+    2120, 2149, 2179, 2208, 2240, 2272, 2298, 2323,
+    2347, 2371, 2397, 2422, 2446, 2467, 2487, 2501,
+    2516, 2532, 2544, 2550, 2557, 2561, 2567, 2575,
+    2578, 2578, 2579, 2580, 2583, 2585, 2585, 2586,
+    2587, 2585, 2582, 2590, 2595, 2599, 2601, 2602,
+    2608, 2619, 2631, 2635, 2642, 2649, 2660, 2669,
+    2683, 2704, 2721, 2739, 2755, 2769, 2791, 2811,
+    2829, 2849, 2870, 2888, 2909, 2931, 2948, 2968,
+    2989, 3004, 3031, 3052, 3063, 3069, 3081, 3095,
+    3102, 3097, 3073, 3042, 3007, 2964, 2919, 2869,
+    2814, 2755, 2694, 2634, 2584, 2535, 2473, 2404,
+    2319, 2222, 2138, 2079, 2021, 1957, 1890, 1819,
+    1758, 1713, 1675, 1641, 1610, 1569, 1526, 1500,
+    1493, 1504, 1519, 1531, 1548, 1567, 1587, 1608,
+    1634, 1661, 1680, 1704, 1738, 1782, 1844, 1901,
+    1949, 1987, 2025, 2062, 2095, 2129, 2158, 2179,
+    2192, 2209, 2225, 2246, 2277, 2294, 2301, 2296,
+    2281, 2267, 2259, 2260, 2268, 2267, 2258, 2245,
+    2229, 2214, 2201, 2187, 2168, 2145, 2119, 2090,
+    2065, 2040, 2013, 1981, 1950, 1932, 1907, 1860,
+    1805, 1751, 1700, 1661, 1626, 1591, 1554, 1504,
+    1442, 1388, 1340, 1296, 1263, 1237, 1213, 1194,
+    1173, 1159, 1154, 1154, 1160, 1173, 1190, 1202,
+    1210, 1213, 1242, 1277, 1318, 1370, 1421, 1473,
+    1517, 1558, 1603, 1657, 1711, 1762, 1812, 1857,
+    1895, 1926, 1956, 1985, 2009, 2027, 2039, 2044,
+    2042, 2038, 2037, 2039, 2047, 2055, 2057, 2049,
+    2030, 2008, 1990, 1981, 1974, 1971, 1966, 1957,
+    1949, 1943, 1944, 1953, 1964, 1979, 1986, 1991,
+    2002, 2018, 2040, 2069, 2099, 2130, 2163, 2189,
+    2212, 2233, 2261, 2297, 2338, 2381, 2416, 2454,
+    2493, 2537, 2578, 2621, 2664, 2701, 2730, 2753,
+    2776, 2805, 2841, 2877, 2914, 2940, 2961, 2975,
+    2984, 2993, 3008, 3028, 3044, 3054, 3055, 3054,
+    3058, 3063, 3072, 3080, 3086, 3082, 3074, 3069,
+    3070, 3078, 3094, 3116, 3134, 3147, 3155, 3161,
+    3171, 3185, 3203, 3222, 3235, 3235, 3229, 3218,
+    3210, 3205, 3190, 3171, 3144, 3109, 3055, 3002,
+    2953, 2902, 2840, 2760, 2669, 2559, 2445, 2337,
+    2236, 2132, 2031, 1930, 1828, 1731, 1635, 1546,
+    1473, 1410, 1352, 1298, 1258, 1226, 1205, 1195,
+    1206, 1238, 1269, 1305, 1354, 1404, 1461, 1534,
+    1624, 1727, 1839, 1952, 2056, 2159, 2258, 2362,
+    2465, 2569, 2668, 2751, 2819, 2882, 2944, 3005,
+    3063, 3111, 3143, 3152, 3148, 3135, 3115, 3092,
+    3068, 3039, 2996, 2942, 2881, 2812, 2744, 2679,
+    2611, 2549, 2481, 2412, 2346, 2283, 2230, 2185,
+    2142, 2090, 2025, 1945, 1869, 1809, 1762, 1720,
+    1681, 1633, 1574, 1519, 1480, 1451, 1427, 1397,
+    1363, 1325, 1286, 1258, 1241, 1236, 1234, 1229,
+    1226, 1224, 1222, 1220, 1230, 1252, 1284, 1329,
+    1379, 1436, 1490, 1540, 1591, 1652, 1720, 1787,
+    1850, 1907, 1961, 2016, 2078, 2145, 2213, 2274,
+    2319, 2349, 2369, 2380, 2387, 2400, 2411, 2407,
+    2392, 2366, 2329, 2292, 2255, 2225, 2192, 2149,
+    2101, 2046, 1995, 1956, 1932, 1913, 1897, 1880,
+    1851, 1825, 1806, 1799, 1808, 1830, 1854, 1880,
+    1905, 1935, 1978, 2031, 2093, 2154, 2209, 2259,
+    2315, 2369, 2428, 2497, 2564, 2630, 2685, 2733,
+    2777, 2822, 2862, 2904, 2943, 2976, 3003, 3026,
+    3043, 3062, 3076, 3079, 3077, 3076, 3075, 3063,
+    3048, 3035, 3029, 3022, 3021, 3021, 3020, 3012,
+    3004, 3001, 2998, 3004, 3013, 3022, 3031, 3035,
+    3038, 3044, 3054, 3058, 3057, 3050, 3036, 3019,
+    2998, 2976, 2955, 2925, 2883, 2829, 2770, 2691,
+    2600, 2506, 2403, 2296, 2176, 2054, 1938, 1819,
+    1703, 1592, 1488, 1383, 1281, 1183, 1096, 1024,
+    961, 917, 890, 874, 873, 880, 901, 937,
+    983, 1040, 1112, 1195, 1283, 1390, 1504, 1623,
+    1753, 1883, 2011, 2131, 2245, 2356, 2464, 2566,
+    2664, 2752, 2833, 2906, 2968, 3010, 3039, 3068,
+    3070, 3054, 3033, 3002, 2960, 2908, 2853, 2792,
+    2724, 2645, 2564, 2476, 2380, 2289, 2199, 2116,
+    2039, 1969, 1899, 1839, 1780, 1722, 1670, 1626,
+    1585, 1544, 1503, 1462, 1412, 1370, 1340, 1320,
+    1299, 1272, 1252, 1224, 1193, 1168, 1156, 1155,
+    1152, 1147, 1140, 1129, 1116, 1113, 1115, 1130,
+    1143, 1146, 1152, 1169, 1187, 1215, 1258, 1301,
+    1345, 1385, 1428, 1469, 1511, 1555, 1611, 1669,
+    1716, 1761, 1802, 1841, 1880, 1920, 1959, 1995,
+    2024, 2045, 2060, 2069, 2073, 2071, 2067, 2057,
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+    1727, 1688, 1654, 1621, 1596, 1575, 1562, 1556,
+    1549, 1545, 1545, 1557, 1578, 1610, 1654, 1700,
+    1752, 1808, 1869, 1935, 2007, 2089, 2173, 2253,
+    2327, 2396, 2458, 2518, 2580, 2640, 2694, 2739,
+    2772, 2798, 2824, 2852, 2878, 2901, 2925, 2935,
+    2940, 2938, 2935, 2931, 2927, 2927, 2921, 2911,
+    2897, 2881, 2866, 2861, 2861, 2860, 2860, 2859,
+    2858, 2855, 2858, 2860, 2863, 2864, 2863, 2856,
+    2841, 2817, 2798, 2777, 2750, 2716, 2676, 2629,
+    2570, 2498, 2413, 2325, 2232, 2122, 2010, 1907,
+    1791, 1673, 1558, 1448, 1348, 1253, 1159, 1073,
+    993, 920, 863, 823, 799, 791, 793, 806,
+    836, 870, 913, 973, 1048, 1135, 1229, 1332,
+    1440, 1556, 1679, 1806, 1939, 2067, 2184, 2295,
+    2398, 2490, 2579, 2663, 2733, 2800, 2849, 2882,
+    2903, 2910, 2900, 2880, 2851, 2810, 2755, 2692,
+    2623, 2550, 2473, 2393, 2308, 2220, 2127, 2035,
+    1944, 1859, 1783, 1713, 1649, 1596, 1549, 1509,
+    1478, 1445, 1415, 1385, 1360, 1340, 1317, 1291,
+    1271, 1259, 1243, 1229, 1219, 1212, 1199, 1181,
+    1170, 1164, 1165, 1161, 1158, 1156, 1153, 1149,
+    1150, 1159, 1173, 1185, 1196, 1212, 1236, 1264,
+    1297, 1339, 1383, 1424, 1464, 1507, 1547, 1584,
+    1627, 1668, 1711, 1747, 1781, 1813, 1845, 1872,
+    1901, 1928, 1947, 1958, 1964, 1965, 1962, 1954,
+    1943, 1927, 1906, 1875, 1838, 1802, 1770, 1737,
+    1702, 1671, 1644, 1620, 1597, 1577, 1565, 1556,
+    1550, 1547, 1549, 1557, 1572, 1587, 1610, 1645,
+    1686, 1734, 1786, 1845, 1906, 1973, 2045, 2126,
+    2209, 2289, 2365, 2435, 2502, 2571, 2632, 2690,
+    2745, 2789, 2826, 2859, 2890, 2916, 2935, 2955,
+    2975, 2991, 2997, 2994, 2989, 2977, 2966, 2959,
+    2952, 2949, 2937, 2913, 2888, 2865, 2848, 2834,
+    2820, 2794, 2762, 2729, 2699, 2671, 2644, 2619,
+    2584, 2538, 2488, 2428, 2368, 2301, 2224, 2142,
+    2053, 1956, 1853, 1754, 1662, 1572, 1481, 1390,
+    1308, 1226, 1147, 1074, 1012, 962, 921, 893,
+    877, 865, 870, 889, 924, 970, 1024, 1086,
+    1153, 1230, 1315, 1407, 1510, 1618, 1729, 1841,
+    1944, 2043, 2141, 2233, 2319, 2402, 2475, 2538,
+    2598, 2649, 2685, 2714, 2732, 2734, 2725, 2703,
+    2663, 2611, 2549, 2481, 2415, 2348, 2276, 2196,
+    2114, 2031, 1949, 1867, 1792, 1723, 1661, 1605,
+    1552, 1505, 1468, 1436, 1411, 1383, 1352, 1314,
+    1281, 1252, 1236, 1221, 1201, 1186, 1171, 1157,
+    1149, 1149, 1146, 1136, 1132, 1127, 1123, 1124,
+    1135, 1145, 1155, 1163, 1160, 1169, 1187, 1210,
+    1238, 1273, 1311, 1355, 1404, 1452, 1503, 1550,
+    1598, 1647, 1691, 1729, 1764, 1798, 1828, 1857,
+    1885, 1910, 1928, 1939, 1953, 1964, 1968, 1963,
+    1955, 1941, 1919, 1892, 1865, 1834, 1804, 1772,
+    1731, 1695, 1659, 1627, 1603, 1584, 1566, 1557,
+    1554, 1551, 1552, 1560, 1580, 1595, 1617, 1646,
+    1679, 1724, 1772, 1825, 1882, 1938, 1994, 2063,
+    2135, 2205, 2276, 2347, 2419, 2491, 2564, 2640,
+    2709, 2770, 2815, 2857, 2897, 2932, 2966, 2993,
+    3017, 3035, 3045, 3052, 3059, 3067, 3068, 3072,
+    3071, 3054, 3030, 3006, 2988, 2967, 2945, 2926,
+    2897, 2854, 2807, 2758, 2711, 2665, 2621, 2573,
+    2512, 2443, 2366, 2289, 2212, 2128, 2034, 1924,
+    1801, 1677, 1567, 1465, 1369, 1283, 1202, 1126,
+    1051, 982, 931, 896, 866, 842, 835, 845,
+    865, 900, 951, 1014, 1086, 1160, 1242, 1332,
+    1430, 1535, 1650, 1772, 1896, 2020, 2142, 2253,
+    2352, 2438, 2514, 2578, 2632, 2675, 2708, 2731,
+    2748, 2755, 2752, 2738, 2707, 2660, 2601, 2531,
+    2453, 2371, 2289, 2206, 2121, 2038, 1951, 1867,
+    1784, 1701, 1624, 1556, 1497, 1452, 1413, 1382,
+    1366, 1357, 1345, 1330, 1316, 1299, 1272, 1237,
+    1203, 1181, 1167, 1153, 1142, 1134, 1123, 1102,
+    1086, 1080, 1077, 1072, 1067, 1071, 1079, 1087,
+    1099, 1120, 1149, 1174, 1197, 1227, 1260, 1301,
+    1348, 1402, 1464, 1528, 1587, 1642, 1694, 1739,
+    1779, 1814, 1845, 1873, 1894, 1913, 1928, 1946,
+    1962, 1974, 1982, 1978, 1964, 1939, 1912, 1883,
+    1856, 1827, 1793, 1758, 1719, 1677, 1640, 1610,
+    1583, 1561, 1542, 1537, 1538, 1546, 1567, 1592,
+    1623, 1659, 1689, 1718, 1751, 1791, 1831, 1877,
+    1930, 1990, 2051, 2110, 2172, 2236, 2297, 2353,
+    2402, 2449, 2495, 2541, 2584, 2619, 2648, 2671,
+    2693, 2711, 2727, 2742, 2753, 2769, 2782, 2803,
+    2829, 2851, 2878, 2904, 2927, 2941, 2950, 2951,
+    2942, 2928, 2917, 2901, 2876, 2843, 2803, 2766,
+    2714, 2660, 2605, 2539, 2459, 2361, 2250, 2134,
+    2021, 1900, 1768, 1634, 1507, 1377, 1254, 1147,
+    1050, 960, 877, 803, 754, 726, 703, 690,
+    699, 722, 757, 805, 874, 956, 1044, 1134,
+    1238, 1357, 1481, 1608, 1737, 1864, 1991, 2113,
+    2225, 2328, 2418, 2488, 2545, 2587, 2618, 2635,
+    2642, 2639, 2620, 2592, 2552, 2505, 2447, 2375,
+    2296, 2214, 2126, 2035, 1947, 1857, 1771, 1686,
+    1604, 1532, 1471, 1415, 1371, 1338, 1316, 1304,
+    1307, 1318, 1330, 1339, 1343, 1344, 1338, 1328,
+    1319, 1297, 1262, 1225, 1196, 1172, 1148, 1120,
+    1093, 1068, 1037, 1005, 987, 976, 965, 949,
+    943, 942, 943, 953, 976, 1006, 1038, 1073,
+    1118, 1173, 1236, 1308, 1381, 1456, 1531, 1599,
+    1659, 1718, 1767, 1807, 1843, 1878, 1908, 1926,
+    1936, 1943, 1945, 1941, 1934, 1917, 1890, 1851,
+    1806, 1761, 1719, 1673, 1624, 1579, 1538, 1496,
+    1460, 1442, 1435, 1437, 1447, 1467, 1499, 1536,
+    1581, 1632, 1683, 1737, 1795, 1853, 1914, 1979,
+    2042, 2105, 2168, 2238, 2308, 2369, 2428, 2482,
+    2533, 2582, 2623, 2661, 2688, 2700, 2712, 2724,
+    2733, 2739, 2735, 2729, 2724, 2719, 2718, 2734,
+    2756, 2772, 2784, 2800, 2822, 2836, 2839, 2823,
+    2803, 2780, 2749, 2714, 2676, 2636, 2582, 2508,
+    2439, 2379, 2307, 2207, 2097, 1977, 1841, 1695,
+    1563, 1455, 1351, 1237, 1117, 1015, 923, 843,
+    781, 739, 709, 686, 675, 696, 742, 803,
+    874, 961, 1055, 1146, 1237, 1334, 1440, 1562,
+    1693, 1830, 1968, 2097, 2218, 2322, 2415, 2498,
+    2564, 2606, 2631, 2638, 2623, 2603, 2579, 2547,
+    2506, 2451, 2371, 2276, 2176, 2077, 1988, 1900,
+    1818, 1734, 1648, 1571, 1500, 1429, 1366, 1308,
+    1252, 1206, 1176, 1163, 1164, 1186, 1215, 1244,
+    1267, 1279, 1285, 1271, 1246, 1230, 1216, 1196,
+    1172, 1147, 1109, 1061, 1018, 988, 970, 944,
+    908, 878, 858, 847, 850, 874, 915, 942,
+    958, 979, 1013, 1060, 1118, 1193, 1280, 1361,
+    1435, 1512, 1598, 1679, 1755, 1819, 1866, 1903,
+    1928, 1939, 1954, 1973, 1977, 1973, 1961, 1934,
+    1892, 1842, 1790, 1744, 1700, 1654, 1600, 1540,
+    1483, 1428, 1385, 1354, 1329, 1309, 1296, 1298,
+    1318, 1358, 1414, 1485, 1560, 1628, 1696, 1767,
+    1842, 1913, 1991, 2071, 2150, 2229, 2292, 2350,
+    2414, 2479, 2535, 2582, 2628, 2658, 2673, 2682,
+    2700, 2721, 2728, 2725, 2719, 2707, 2679, 2653,
+    2642, 2645, 2649, 2649, 2658, 2676, 2697, 2726,
+    2755, 2770, 2767, 2755, 2739, 2722, 2696, 2663,
+    2621, 2565, 2499, 2432, 2359, 2262, 2157, 2046,
+    1915, 1769, 1624, 1487, 1368, 1254, 1134, 1031,
+    931, 833, 759, 706, 669, 645, 635, 651,
+    689, 745, 819, 914, 1021, 1131, 1240, 1348,
+    1460, 1580, 1706, 1839, 1977, 2111, 2231, 2338,
+    2431, 2513, 2577, 2616, 2638, 2643, 2627, 2592,
+    2550, 2503, 2451, 2386, 2304, 2208, 2103, 1997,
+    1897, 1801, 1719, 1645, 1576, 1513, 1455, 1402,
+    1358, 1322, 1296, 1270, 1253, 1244, 1252, 1269,
+    1290, 1315, 1335, 1346, 1342, 1325, 1299, 1269,
+    1236, 1190, 1140, 1090, 1038, 986, 931, 880,
+    837, 794, 755, 723, 711, 714, 726, 754,
+    795, 844, 896, 954, 1020, 1100, 1186, 1273,
+    1369, 1472, 1574, 1672, 1766, 1855, 1932, 1995,
+    2040, 2069, 2094, 2106, 2103, 2096, 2079, 2048,
+    2006, 1953, 1897, 1834, 1774, 1708, 1641, 1579,
+    1520, 1465, 1414, 1377, 1348, 1328, 1321, 1319,
+    1329, 1361, 1410, 1471, 1540, 1618, 1698, 1779,
+    1866, 1952, 2034, 2117, 2192, 2258, 2320, 2377,
+    2431, 2479, 2521, 2558, 2581, 2596, 2610, 2617,
+    2616, 2618, 2625, 2624, 2610, 2601, 2597, 2589,
+    2584, 2589, 2594, 2612, 2633, 2651, 2692, 2745,
+    2787, 2813, 2835, 2854, 2852, 2837, 2821, 2803,
+    2774, 2715, 2641, 2566, 2481, 2384, 2272, 2143,
+    2003, 1843, 1666, 1507, 1374, 1251, 1128, 1015,
+    915, 821, 744, 691, 659, 650, 654, 671,
+    713, 783, 872, 979, 1108, 1238, 1364, 1477,
+    1592, 1713, 1838, 1966, 2090, 2207, 2314, 2405,
+    2475, 2525, 2559, 2571, 2561, 2537, 2497, 2435,
+    2363, 2295, 2229, 2157, 2073, 1981, 1880, 1778,
+    1689, 1613, 1551, 1506, 1470, 1436, 1418, 1406,
+    1398, 1399, 1408, 1421, 1435, 1449, 1461, 1480,
+    1502, 1516, 1514, 1500, 1473, 1432, 1372, 1303,
+    1236, 1162, 1081, 995, 917, 848, 785, 718,
+    669, 632, 595, 575, 574, 601, 646, 693,
+    755, 835, 929, 1024, 1124, 1236, 1354, 1468,
+    1576, 1688, 1800, 1903, 1985, 2051, 2106, 2150,
+    2168, 2162, 2149, 2130, 2093, 2045, 1989, 1929,
+    1862, 1792, 1715, 1639, 1573, 1511, 1451, 1398,
+    1359, 1335, 1321, 1323, 1331, 1356, 1402, 1453,
+    1507, 1576, 1665, 1755, 1838, 1929, 2023, 2110,
+    2190, 2261, 2323, 2373, 2415, 2449, 2473, 2497,
+    2513, 2504, 2491, 2485, 2468, 2443, 2430, 2413,
+    2380, 2358, 2355, 2354, 2349, 2368, 2388, 2403,
+    2436, 2478, 2526, 2594, 2673, 2745, 2809, 2877,
+    2926, 2942, 2962, 2981, 2972, 2937, 2882, 2829,
+    2752, 2666, 2568, 2448, 2320, 2183, 2012, 1813,
+    1625, 1455, 1286, 1138, 1015, 902, 802, 715,
+    646, 613, 614, 626, 649, 694, 772, 872,
+    983, 1118, 1271, 1428, 1569, 1695, 1806, 1920,
+    2040, 2151, 2251, 2344, 2415, 2460, 2491, 2500,
+    2491, 2458, 2398, 2319, 2231, 2136, 2038, 1941,
+    1856, 1782, 1709, 1633, 1556, 1487, 1428, 1387,
+    1366, 1364, 1378, 1396, 1416, 1443, 1479, 1520,
+    1565, 1604, 1637, 1658, 1671, 1679, 1685, 1674,
+    1649, 1602, 1528, 1432, 1320, 1199, 1073, 955,
+    842, 731, 635, 553, 482, 426, 391, 382,
+    389, 409, 450, 515, 603, 706, 824, 959,
+    1108, 1257, 1397, 1531, 1672, 1808, 1928, 2040,
+    2137, 2213, 2259, 2286, 2291, 2285, 2256, 2196,
+    2120, 2038, 1952, 1861, 1764, 1679, 1604, 1528,
+    1451, 1384, 1332, 1293, 1267, 1256, 1265, 1294,
+    1334, 1386, 1453, 1535, 1634, 1741, 1845, 1948,
+    2053, 2151, 2234, 2305, 2380, 2451, 2504, 2523,
+    2527, 2531, 2528, 2509, 2474, 2446, 2422, 2382,
+    2322, 2274, 2253, 2240, 2215, 2184, 2172, 2186,
+    2199, 2212, 2257, 2327, 2392, 2450, 2522, 2612,
+    2714, 2823, 2921, 3008, 3092, 3154, 3180, 3186,
+    3189, 3174, 3128, 3049, 2951, 2839, 2711, 2572,
+    2418, 2254, 2092, 1912, 1708, 1505, 1315, 1151,
+    1010, 895, 805, 739, 696, 670, 667, 710,
+    786, 872, 967, 1070, 1196, 1336, 1482, 1634,
+    1793, 1945, 2069, 2157, 2225, 2301, 2370, 2412,
+    2438, 2451, 2442, 2407, 2349, 2283, 2213, 2133,
+    2031, 1925, 1823, 1731, 1643, 1573, 1531, 1507,
+    1497, 1485, 1485, 1492, 1520, 1560, 1611, 1676,
+    1738, 1796, 1848, 1893, 1934, 1964, 1978, 1976,
+    1957, 1904, 1815, 1726, 1631, 1513, 1380, 1243,
+    1097, 940, 788, 649, 532, 436, 351, 290,
+    258, 256, 276, 316, 391, 494, 613, 739,
+    878, 1029, 1181, 1343, 1509, 1669, 1819, 1947,
+    2052, 2145, 2220, 2263, 2282, 2284, 2264, 2223,
+    2158, 2081, 1997, 1914, 1827, 1736, 1646, 1560,
+    1483, 1424, 1377, 1346, 1339, 1346, 1359, 1391,
+    1444, 1512, 1579, 1658, 1751, 1849, 1944, 2040,
+    2133, 2221, 2300, 2372, 2426, 2464, 2490, 2496,
+    2484, 2467, 2437, 2400, 2360, 2309, 2255, 2205,
+    2169, 2130, 2080, 2051, 2049, 2068, 2081, 2113,
+    2173, 2239, 2309, 2396, 2499, 2606, 2715, 2815,
+    2917, 3026, 3140, 3237, 3323, 3408, 3472, 3491,
+    3454, 3398, 3342, 3252, 3136, 3009, 2868, 2715,
+    2552, 2390, 2240, 2090, 1934, 1769, 1609, 1465,
+    1338, 1221, 1116, 1058, 1049, 1040, 1032, 1052,
+    1100, 1169, 1245, 1330, 1438, 1550, 1650, 1740,
+    1838, 1933, 2015, 2072, 2112, 2149, 2167, 2156,
+    2133, 2126, 2121, 2105, 2072, 2027, 1981, 1930,
+    1881, 1839, 1802, 1768, 1740, 1723, 1721, 1739,
+    1773, 1812, 1866, 1924, 1988, 2047, 2102, 2159,
+    2210, 2251, 2274, 2286, 2278, 2254, 2212, 2157,
+    2084, 1999, 1909, 1802, 1678, 1548, 1416, 1278,
+    1139, 997, 841, 704, 599, 505, 421, 370,
+    363, 374, 395, 448, 538, 646, 759, 880,
+    1015, 1157, 1299, 1422, 1541, 1671, 1790, 1879,
+    1949, 2008, 2060, 2084, 2077, 2065, 2043, 2003,
+    1939, 1867, 1803, 1735, 1659, 1589, 1536, 1507,
+    1486, 1466, 1462, 1485, 1534, 1587, 1638, 1703,
+    1781, 1853, 1917, 1987, 2058, 2121, 2172, 2215,
+    2258, 2301, 2331, 2335, 2341, 2355, 2355, 2327,
+    2291, 2261, 2221, 2172, 2122, 2080, 2050, 2030,
+    2012, 2015, 2042, 2060, 2081, 2126, 2184, 2241,
+    2296, 2369, 2449, 2526, 2596, 2663, 2741, 2830,
+    2900, 2954, 3003, 3058, 3092, 3101, 3128, 3167,
+    3178, 3160, 3129, 3100, 3050, 2972, 2880, 2785,
+    2696, 2597, 2481, 2383, 2299, 2221, 2146, 2075,
+    2018, 1959, 1883, 1804, 1739, 1681, 1619, 1568,
+    1548, 1541, 1536, 1536, 1548, 1577, 1613, 1648,
+    1678, 1710, 1737, 1750, 1758, 1779, 1804, 1822,
+    1826, 1831, 1845, 1852, 1858, 1872, 1904, 1943,
+    1970, 1991, 2015, 2044, 2070, 2084, 2097, 2110,
+    2117, 2118, 2120, 2135, 2155, 2171, 2188, 2210,
+    2226, 2223, 2208, 2194, 2173, 2142, 2097, 2046,
+    1988, 1918, 1836, 1761, 1699, 1622, 1528, 1438,
+    1355, 1269, 1186, 1109, 1036, 968, 906, 845,
+    798, 773, 757, 749, 762, 803, 857, 915,
+    984, 1067, 1151, 1229, 1305, 1380, 1451, 1518,
+    1568, 1613, 1657, 1693, 1716, 1736, 1756, 1768,
+    1769, 1759, 1750, 1750, 1744, 1728, 1709, 1700,
+    1702, 1700, 1700, 1712, 1735, 1766, 1799, 1839,
+    1887, 1935, 1969, 1999, 2036, 2069, 2092, 2106,
+    2117, 2130, 2136, 2136, 2145, 2153, 2148, 2145,
+    2142, 2141, 2136, 2131, 2134, 2147, 2154, 2157,
+    2164, 2171, 2176, 2200, 2244, 2290, 2326, 2368,
+    2436, 2502, 2560, 2631, 2712, 2769, 2814, 2855,
+    2894, 2939, 2991, 3028, 3042, 3069, 3115, 3144,
+    3139, 3149, 3177, 3146, 3045, 2956, 2888, 2804,
+    2708, 2608, 2497, 2401, 2333, 2263, 2194, 2157,
+    2126, 2058, 1970, 1902, 1862, 1818, 1760, 1719,
+    1681, 1625, 1582, 1558, 1531, 1528, 1528, 1526,
+    1534, 1553, 1588, 1610, 1631, 1655, 1670, 1654,
+    1639, 1651, 1670, 1683, 1721, 1789, 1857, 1919,
+    1977, 2027, 2076, 2120, 2145, 2162, 2177, 2191,
+    2200, 2201, 2211, 2226, 2230, 2219, 2210, 2200,
+    2188, 2183, 2180, 2179, 2162, 2132, 2093, 2045,
+    1983, 1911, 1840, 1773, 1711, 1638, 1572, 1539,
+    1512, 1456, 1381, 1314, 1248, 1178, 1112, 1042,
+    980, 936, 887, 833, 809, 817, 825, 832,
+    859, 909, 961, 1014, 1085, 1169, 1246, 1316,
+    1375, 1420, 1468, 1524, 1575, 1623, 1672, 1715,
+    1746, 1773, 1802, 1822, 1833, 1823, 1807, 1794,
+    1778, 1761, 1754, 1754, 1768, 1792, 1804, 1818,
+    1845, 1882, 1918, 1951, 1984, 2014, 2036, 2047,
+    2062, 2071, 2068, 2066, 2068, 2068, 2064, 2063,
+    2077, 2103, 2118, 2120, 2135, 2152, 2149, 2139,
+    2148, 2171, 2185, 2192, 2211, 2254, 2303, 2353,
+    2404, 2436, 2463, 2510, 2546, 2562, 2586, 2620,
+    2648, 2674, 2701, 2718, 2744, 2786, 2828, 2847,
+    2860, 2897, 2940, 2944, 2953, 2989, 3012, 3010,
+    3010, 3007, 2977, 2931, 2881, 2830, 2764, 2696,
+    2632, 2553, 2463, 2383, 2308, 2227, 2147, 2068,
+    1981, 1885, 1804, 1738, 1656, 1584, 1538, 1514,
+    1501, 1484, 1482, 1504, 1534, 1573, 1613, 1649,
+    1691, 1734, 1762, 1782, 1814, 1847, 1865, 1877,
+    1896, 1922, 1940, 1954, 1973, 1997, 2022, 2036,
+    2039, 2043, 2052, 2057, 2055, 2059, 2061, 2064,
+    2065, 2076, 2094, 2119, 2139, 2155, 2175, 2187,
+    2186, 2175, 2156, 2131, 2096, 2051, 1997, 1944,
+    1877, 1783, 1686, 1620, 1554, 1449, 1335, 1249,
+    1153, 1045, 978, 932, 869, 820, 804, 793,
+    790, 821, 881, 942, 1009, 1099, 1189, 1267,
+    1349, 1437, 1508, 1563, 1617, 1660, 1676, 1686,
+    1705, 1723, 1722, 1712, 1703, 1688, 1666, 1651,
+    1646, 1636, 1634, 1650, 1663, 1682, 1726, 1772,
+    1822, 1888, 1957, 2014, 2065, 2121, 2172, 2209,
+    2237, 2255, 2252, 2240, 2225, 2204, 2169, 2139,
+    2119, 2081, 2047, 2036, 2029, 2002, 1986, 2001,
+    2023, 2039, 2065, 2114, 2155, 2197, 2257, 2326,
+    2387, 2446, 2502, 2539, 2590, 2671, 2725, 2742,
+    2786, 2852, 2893, 2909, 2931, 2955, 2967, 2974,
+    2990, 3006, 3012, 3030, 3055, 3078, 3110, 3146,
+    3172, 3187, 3175, 3122, 3050, 2998, 2952, 2876,
+    2779, 2702, 2649, 2594, 2518, 2453, 2423, 2375,
+    2289, 2205, 2122, 2041, 1980, 1915, 1848, 1793,
+    1727, 1661, 1602, 1558, 1544, 1537, 1531, 1556,
+    1597, 1638, 1679, 1727, 1763, 1782, 1783, 1771,
+    1775, 1793, 1826, 1875, 1938, 2019, 2096, 2144,
+    2174, 2207, 2230, 2232, 2226, 2229, 2232, 2235,
+    2238, 2249, 2267, 2275, 2267, 2261, 2266, 2270,
+    2278, 2291, 2310, 2326, 2314, 2272, 2217, 2158,
+    2089, 2015, 1952, 1906, 1868, 1820, 1771, 1747,
+    1731, 1670, 1566, 1474, 1385, 1287, 1202, 1122,
+    1035, 976, 956, 932, 901, 904, 930, 952,
+    991, 1055, 1130, 1195, 1253, 1314, 1372, 1419,
+    1463, 1505, 1539, 1569, 1616, 1675, 1730, 1765,
+    1786, 1802, 1815, 1814, 1802, 1780, 1758, 1764,
+    1780, 1789, 1814, 1862, 1914, 1967, 2019, 2068,
+    2111, 2153, 2194, 2211, 2219, 2230, 2220, 2196,
+    2171, 2142, 2109, 2083, 2068, 2048, 2031, 2030,
+    2039, 2044, 2040, 2048, 2071, 2099, 2123, 2159,
+    2208, 2266, 2333, 2404, 2458, 2498, 2553, 2617,
+    2651, 2660, 2681, 2704, 2706, 2691, 2674, 2667,
+    2662, 2652, 2653, 2663, 2680, 2704, 2738, 2777,
+    2833, 2895, 2936, 2970, 3020, 3065, 3101, 3148,
+    3207, 3260, 3300, 3332, 3338, 3311, 3244, 3157,
+    3055, 2947, 2826, 2691, 2553, 2429, 2328, 2240,
+    2156, 2069, 1987, 1916, 1854, 1798, 1759, 1717,
+    1672, 1653, 1667, 1676, 1669, 1679, 1708, 1740,
+    1781, 1833, 1874, 1906, 1930, 1941, 1929, 1913,
+    1895, 1866, 1836, 1814, 1812, 1829, 1856, 1895,
+    1946, 1994, 2042, 2084, 2128, 2170, 2203, 2235,
+    2266, 2292, 2311, 2320, 2325, 2338, 2348, 2342,
+    2331, 2325, 2320, 2301, 2262, 2216, 2163, 2097,
+    2025, 1953, 1890, 1838, 1796, 1768, 1755, 1738,
+    1678, 1583, 1524, 1524, 1492, 1387, 1313, 1302,
+    1264, 1200, 1181, 1187, 1175, 1151, 1115, 1105,
+    1128, 1150, 1177, 1219, 1268, 1316, 1358, 1394,
+    1436, 1476, 1523, 1577, 1629, 1681, 1720, 1745,
+    1779, 1820, 1839, 1841, 1836, 1835, 1843, 1849,
+    1852, 1870, 1909, 1941, 1944, 1944, 1968, 1999,
+    2008, 2017, 2038, 2055, 2055, 2050, 2057, 2070,
+    2073, 2060, 2049, 2050, 2058, 2059, 2054, 2064,
+    2087, 2092, 2088, 2084, 2103, 2136, 2159, 2183,
+    2222, 2267, 2310, 2349, 2391, 2434, 2465, 2475,
+    2489, 2517, 2542, 2564, 2576, 2602, 2640, 2683,
+    2727, 2763, 2792, 2822, 2893, 2982, 3023, 3033,
+    3073, 3122, 3156, 3207, 3257, 3268, 3288, 3328,
+    3359, 3391, 3399, 3342, 3235, 3125, 3034, 2927,
+    2795, 2671, 2547, 2464, 2432, 2398, 2365, 2327,
+    2260, 2199, 2151, 2078, 2010, 1966, 1924, 1892,
+    1861, 1812, 1760, 1710, 1682, 1660, 1624, 1618,
+    1643, 1664, 1687, 1723, 1746, 1744, 1728, 1693,
+    1662, 1659, 1673, 1709, 1777, 1874, 1986, 2078,
+    2131, 2162, 2187, 2193, 2185, 2180, 2179, 2174,
+    2171, 2187, 2212, 2224, 2217, 2197, 2177, 2170,
+    2173, 2182, 2197, 2213, 2218, 2200, 2168, 2126,
+    2074, 2021, 1980, 1956, 1951, 1960, 1976, 1994,
+    1990, 1953, 1870, 1770, 1693, 1623, 1514, 1393,
+    1338, 1331, 1292, 1241, 1226, 1199, 1124, 1047,
+    1013, 1026, 1043, 1046, 1072, 1135, 1198, 1244,
+    1300, 1372, 1438, 1487, 1540, 1604, 1674, 1726,
+    1742, 1749, 1765, 1768, 1732, 1679, 1657, 1657,
+    1664, 1678, 1705, 1744, 1778, 1791, 1795, 1820,
+    1856, 1881, 1907, 1952, 1996, 2032, 2074, 2104,
+    2119, 2124, 2110, 2079, 2046, 2023, 2009, 1982,
+    1947, 1923, 1905, 1880, 1860, 1867, 1885, 1908,
+    1937, 1991, 2068, 2132, 2179, 2234, 2293, 2334,
+    2370, 2401, 2419, 2438, 2479, 2513, 2518, 2531,
+    2549, 2544, 2525, 2524, 2537, 2549, 2556, 2573,
+    2607, 2654, 2705, 2766, 2848, 2924, 2965, 3009,
+    3095, 3191, 3244, 3263, 3285, 3322, 3360, 3369,
+    3358, 3366, 3377, 3362, 3309, 3223, 3100, 2971,
+    2853, 2705, 2544, 2429, 2334, 2258, 2244, 2247,
+    2249, 2259, 2246, 2209, 2162, 2093, 2036, 1997,
+    1927, 1841, 1792, 1772, 1753, 1701, 1644, 1621,
+    1614, 1607, 1606, 1603, 1600, 1609, 1609, 1587,
+    1573, 1569, 1570, 1597, 1651, 1730, 1838, 1959,
+    2065, 2153, 2212, 2247, 2253, 2234, 2202, 2168,
+    2139, 2119, 2113, 2118, 2127, 2127, 2128, 2135,
+    2136, 2143, 2153, 2172, 2190, 2190, 2179, 2166,
+    2147, 2123, 2095, 2068, 2062, 2066, 2078, 2096,
+    2113, 2110, 2076, 2028, 1963, 1880, 1789, 1692,
+    1585, 1439, 1286, 1214, 1227, 1225, 1179, 1161,
+    1195, 1237, 1278, 1329, 1359, 1366, 1356, 1329,
+    1322, 1337, 1354, 1373, 1427, 1494, 1557, 1610,
+    1653, 1676, 1670, 1652, 1633, 1618, 1592, 1550,
+    1524, 1539, 1592, 1648, 1708, 1783, 1849, 1916,
+    1987, 2036, 2066, 2101, 2110, 2080, 2044, 2026,
+    2007, 1983, 1963, 1957, 1956, 1956, 1944, 1929,
+    1928, 1926, 1899, 1866, 1847, 1847, 1861, 1889,
+    1921, 1962, 2034, 2115, 2179, 2234, 2301, 2358,
+    2384, 2393, 2392, 2381, 2362, 2343, 2330, 2339,
+    2362, 2383, 2408, 2442, 2475, 2524, 2594, 2642,
+    2654, 2663, 2705, 2764, 2806, 2840, 2899, 2984,
+    3073, 3150, 3210, 3274, 3351, 3398, 3413, 3414,
+    3426, 3448, 3427, 3394, 3394, 3422, 3435, 3389,
+    3293, 3187, 3082, 2982, 2890, 2789, 2677, 2584,
+    2551, 2552, 2545, 2534, 2520, 2465, 2386, 2306,
+    2218, 2135, 2067, 1985, 1891, 1796, 1711, 1655,
+    1602, 1532, 1459, 1434, 1451, 1476, 1514, 1567,
+    1615, 1641, 1652, 1656, 1658, 1666, 1684, 1714,
+    1771, 1860, 1952, 2039, 2107, 2133, 2122, 2096,
+    2060, 2029, 2009, 1992, 1984, 2002, 2044, 2093,
+    2131, 2166, 2195, 2222, 2254, 2291, 2333, 2381,
+    2411, 2416, 2396, 2362, 2316, 2259, 2200, 2145,
+    2107, 2091, 2088, 2089, 2084, 2057, 2020, 1972,
+    1921, 1875, 1833, 1805, 1787, 1760, 1725, 1711,
+    1724, 1723, 1665, 1582, 1539, 1528, 1519, 1470,
+    1395, 1321, 1257, 1221, 1211, 1204, 1206, 1241,
+    1307, 1386, 1481, 1564, 1612, 1640, 1645, 1639,
+    1637, 1644, 1652, 1669, 1688, 1710, 1743, 1777,
+    1792, 1785, 1773, 1763, 1752, 1748, 1750, 1751,
+    1761, 1784, 1804, 1820, 1848, 1890, 1937, 1973,
+    1999, 2027, 2053, 2064, 2054, 2025, 1990, 1950,
+    1912, 1883, 1867, 1856, 1844, 1858, 1887, 1904,
+    1929, 1966, 1997, 2011, 2021, 2044, 2090, 2135,
+    2170, 2194, 2221, 2265, 2308, 2339, 2360, 2365,
+    2374, 2383, 2393, 2411, 2432, 2433, 2417, 2442,
+    2509, 2565, 2589, 2630, 2706, 2777, 2825, 2879,
+    2951, 3017, 3067, 3106, 3145, 3206, 3269, 3305,
+    3331, 3370, 3399, 3399, 3409, 3429, 3426, 3423,
+    3438, 3448, 3428, 3388, 3318, 3224, 3143, 3055,
+    2938, 2822, 2753, 2717, 2689, 2666, 2655, 2661,
+    2657, 2613, 2524, 2431, 2341, 2221, 2102, 2012,
+    1921, 1819, 1714, 1615, 1549, 1530, 1516, 1486,
+    1483, 1518, 1560, 1594, 1627, 1650, 1647, 1627,
+    1606, 1601, 1617, 1644, 1689, 1759, 1844, 1919,
+    1969, 1991, 1983, 1960, 1934, 1899, 1879, 1887,
+    1909, 1937, 1996, 2073, 2145, 2204, 2262, 2319,
+    2371, 2416, 2452, 2479, 2500, 2503, 2474, 2425,
+    2365, 2308, 2251, 2209, 2191, 2197, 2208, 2216,
+    2229, 2240, 2232, 2203, 2160, 2115, 2081, 2062,
+    2057, 2063, 2082, 2102, 2109, 2102, 2086, 2055,
+    2006, 1946, 1855, 1713, 1552, 1432, 1352, 1247,
+    1135, 1105, 1156, 1213, 1273, 1373, 1474, 1529,
+    1555, 1553, 1526, 1488, 1435, 1396, 1396, 1421,
+    1447, 1484, 1523, 1547, 1561, 1565, 1553, 1534,
+    1524, 1516, 1511, 1525, 1554, 1587, 1630, 1687,
+    1742, 1811, 1896, 1976, 2036, 2089, 2132, 2128,
+    2082, 2033, 1984, 1932, 1874, 1837, 1834, 1856,
+    1881, 1912, 1958, 2005, 2033, 2043, 2056, 2062,
+    2060, 2052, 2051, 2059, 2071, 2088, 2103, 2109,
+    2114, 2124, 2127, 2114, 2101, 2088, 2075, 2049,
+    2015, 1989, 1971, 1978, 2007, 2040, 2083, 2137,
+    2211, 2308, 2398, 2456, 2487, 2520, 2553, 2590,
+    2637, 2610, 2541, 2576, 2666, 2721, 2798, 2921,
+    3018, 3073, 3113, 3155, 3193, 3195, 3196, 3234,
+    3295, 3344, 3386, 3442, 3477, 3483, 3516, 3567,
+    3562, 3505, 3425, 3332, 3226, 3113, 3003, 2915,
+    2846, 2762, 2686, 2652, 2632, 2626, 2646, 2648,
+    2600, 2514, 2408, 2265, 2114, 1969, 1837, 1697,
+    1544, 1430, 1392, 1388, 1372, 1366, 1399, 1443,
+    1472, 1489, 1481, 1450, 1434, 1427, 1410, 1403,
+    1418, 1449, 1494, 1555, 1620, 1690, 1760, 1808,
+    1831, 1839, 1830, 1823, 1830, 1841, 1857, 1901,
+    1974, 2050, 2131, 2226, 2331, 2429, 2521, 2589,
+    2625, 2644, 2641, 2605, 2553, 2498, 2446, 2401,
+    2368, 2349, 2345, 2357, 2375, 2392, 2406, 2406,
+    2386, 2341, 2282, 2228, 2182, 2144, 2109, 2078,
+    2060, 2044, 2018, 1989, 1961, 1934, 1897, 1845,
+    1788, 1732, 1671, 1601, 1516, 1439, 1390, 1356,
+    1315, 1272, 1251, 1253, 1265, 1276, 1291, 1306,
+    1319, 1320, 1325, 1343, 1362, 1369, 1373, 1381,
+    1393, 1409, 1439, 1474, 1514, 1554, 1591, 1634,
+    1669, 1688, 1684, 1682, 1694, 1712, 1736, 1770,
+    1812, 1866, 1925, 1980, 2018, 2044, 2056, 2048,
+    2034, 2023, 2012, 1992, 1969, 1961, 1960, 1964,
+    1961, 1956, 1950, 1952, 1952, 1947, 1946, 1939,
+    1924, 1908, 1891, 1874, 1865, 1863, 1854, 1854,
+    1864, 1870, 1863, 1855, 1852, 1846, 1824, 1794,
+    1780, 1781, 1785, 1791, 1802, 1816, 1839, 1868,
+    1903, 1943, 1974, 1996, 2020, 2039, 2066, 2101,
+    2126, 2145, 2173, 2219, 2276, 2326, 2383, 2457,
+    2529, 2596, 2678, 2775, 2858, 2928, 3002, 3073,
+    3156, 3217, 3222, 3232, 3276, 3292, 3278, 3276,
+    3286, 3298, 3326, 3372, 3409, 3426, 3448, 3477,
+    3507, 3517, 3507, 3499, 3475, 3430, 3384, 3331,
+    3252, 3169, 3102, 3032, 2937, 2838, 2773, 2714,
+    2632, 2546, 2452, 2363, 2276, 2179, 2062, 1935,
+    1831, 1751, 1652, 1538, 1472, 1461, 1462, 1453,
+    1460, 1505, 1543, 1560, 1562, 1537, 1486, 1430,
+    1380, 1344, 1329, 1335, 1370, 1432, 1511, 1599,
+    1677, 1734, 1790, 1847, 1884, 1926, 1987, 2058,
+    2126, 2195, 2258, 2320, 2373, 2411, 2448, 2487,
+    2526, 2572, 2614, 2641, 2658, 2661, 2637, 2591,
+    2545, 2506, 2478, 2464, 2477, 2514, 2556, 2588,
+    2604, 2602, 2572, 2518, 2446, 2365, 2292, 2233,
+    2181, 2132, 2089, 2049, 2002, 1947, 1891, 1842,
+    1802, 1771, 1752, 1737, 1724, 1714, 1703, 1677,
+    1641, 1606, 1585, 1577, 1578, 1594, 1610, 1607,
+    1584, 1557, 1530, 1489, 1431, 1367, 1306, 1285,
+    1323, 1372, 1373, 1384, 1451, 1526, 1581, 1625,
+    1663, 1702, 1742, 1767, 1791, 1811, 1811, 1794,
+    1771, 1771, 1786, 1799, 1812, 1831, 1854, 1872,
+    1884, 1894, 1914, 1926, 1917, 1921, 1956, 1998,
+    2021, 2032, 2043, 2061, 2074, 2051, 2014, 1986,
+    1959, 1926, 1888, 1848, 1817, 1794, 1764, 1740,
+    1734, 1741, 1755, 1765, 1781, 1802, 1810, 1809,
+    1808, 1798, 1776, 1754, 1729, 1708, 1694, 1692,
+    1680, 1667, 1657, 1655, 1647, 1641, 1651, 1658,
+    1673, 1705, 1741, 1766, 1792, 1835, 1890, 1935,
+    1957, 1977, 2017, 2055, 2080, 2109, 2140, 2164,
+    2188, 2224, 2263, 2305, 2344, 2396, 2466, 2534,
+    2617, 2713, 2807, 2896, 2988, 3086, 3178, 3240,
+    3270, 3278, 3263, 3229, 3190, 3154, 3122, 3091,
+    3079, 3114, 3189, 3260, 3320, 3390, 3475, 3555,
+    3606, 3610, 3599, 3605, 3578, 3521, 3455, 3383,
+    3306, 3208, 3112, 3042, 2970, 2890, 2812, 2744,
+    2699, 2661, 2598, 2528, 2484, 2433, 2374, 2329,
+    2285, 2244, 2187, 2104, 2015, 1908, 1774, 1629,
+    1506, 1424, 1369, 1336, 1349, 1409, 1490, 1561,
+    1624, 1652, 1664, 1676, 1661, 1644, 1666, 1708,
+    1753, 1807, 1861, 1918, 1961, 1974, 1972, 1982,
+    2004, 2041, 2097, 2170, 2258, 2338, 2399, 2453,
+    2491, 2511, 2525, 2541, 2584, 2645, 2696, 2737,
+    2767, 2767, 2730, 2658, 2561, 2472, 2398, 2340,
+    2309, 2314, 2344, 2376, 2398, 2402, 2387, 2353,
+    2298, 2240, 2195, 2154, 2115, 2075, 2035, 1984,
+    1919, 1833, 1744, 1672, 1617, 1581, 1569, 1581,
+    1606, 1630, 1642, 1640, 1628, 1607, 1581, 1567,
+    1578, 1602, 1643, 1691, 1733, 1760, 1766, 1759,
+    1733, 1704, 1681, 1673, 1688, 1724, 1778, 1837,
+    1898, 1950, 1994, 2018, 2006, 1947, 1860, 1802,
+    1808, 1852, 1877, 1871, 1876, 1905, 1928, 1927,
+    1913, 1887, 1844, 1813, 1817, 1858, 1912, 1934,
+    1926, 1913, 1900, 1874, 1832, 1788, 1751, 1724,
+    1708, 1705, 1715, 1720, 1702, 1674, 1656, 1661,
+    1676, 1684, 1686, 1701, 1723, 1732, 1718, 1693,
+    1667, 1641, 1611, 1590, 1586, 1595, 1614, 1630,
+    1644, 1658, 1660, 1638, 1616, 1619, 1628, 1629,
+    1638, 1662, 1703, 1733, 1745, 1760, 1780, 1787,
+    1779, 1769, 1774, 1787, 1798, 1794, 1791, 1788,
+    1786, 1790, 1795, 1810, 1831, 1853, 1884, 1930,
+    1974, 2000, 2014, 2016, 2009, 1999, 1991, 1991,
+    1995, 2005, 2030, 2059, 2084, 2107, 2125, 2147,
+    2175, 2207, 2246, 2290, 2337, 2392, 2451, 2507,
+    2555, 2598, 2638, 2667, 2690, 2719, 2744, 2751,
+    2748, 2745, 2745, 2760, 2783, 2827, 2871, 2902,
+    2943, 3006, 3067, 3102, 3129, 3176, 3221, 3233,
+    3258, 3285, 3304, 3307, 3285, 3257, 3210, 3162,
+    3135, 3116, 3096, 3072, 3061, 3066, 3069, 3044,
+    3013, 2994, 2960, 2933, 2904, 2868, 2849, 2832,
+    2808, 2778, 2711, 2622, 2529, 2419, 2281, 2128,
+    1981, 1840, 1737, 1683, 1663, 1682, 1732, 1810,
+    1909, 2005, 2075, 2105, 2088, 2029, 1944, 1831,
+    1726, 1639, 1568, 1521, 1501, 1511, 1545, 1591,
+    1631, 1669, 1715, 1770, 1836, 1901, 1958, 2015,
+    2062, 2089, 2103, 2105, 2089, 2074, 2069, 2074,
+    2094, 2116, 2134, 2150, 2150, 2128, 2089, 2045,
+    2016, 2010, 2029, 2077, 2155, 2245, 2333, 2399,
+    2435, 2435, 2393, 2327, 2242, 2154, 2072, 1999,
+    1945, 1904, 1870, 1845, 1828, 1820, 1829, 1846,
+    1880, 1921, 1966, 2007, 2030, 2033, 2009, 1959,
+    1893, 1818, 1749, 1706, 1681, 1674, 1689, 1707,
+    1726, 1736, 1732, 1724, 1711, 1701, 1702, 1719,
+    1750, 1792, 1844, 1893, 1928, 1950, 1957, 1952,
+    1938, 1923, 1907, 1889, 1877, 1865, 1862, 1864,
+    1867, 1866, 1850, 1822, 1803, 1810, 1830, 1855,
+    1887, 1930, 1989, 2050, 2084, 2070, 2027, 1966,
+    1895, 1822, 1755, 1707, 1691, 1694, 1722, 1770,
+    1814, 1842, 1859, 1856, 1841, 1830, 1820, 1814,
+    1803, 1791, 1782, 1769, 1750, 1730, 1705, 1676,
+    1653, 1648, 1652, 1649, 1649, 1652, 1651, 1647,
+    1635, 1625, 1628, 1632, 1641, 1667, 1695, 1713,
+    1724, 1715, 1695, 1674, 1649, 1621, 1594, 1576,
+    1580, 1597, 1617, 1645, 1685, 1719, 1738, 1755,
+    1776, 1797, 1812, 1810, 1801, 1798, 1806, 1810,
+    1805, 1790, 1780, 1790, 1806, 1817, 1832, 1843,
+    1868, 1901, 1919, 1932, 1942, 1950, 1961, 1968,
+    1973, 1983, 1991, 1993, 1994, 1993, 1983, 1976,
+    1976, 1979, 1987, 2000, 2010, 2033, 2072, 2108,
+    2148, 2196, 2244, 2299, 2353, 2397, 2440, 2468,
+    2478, 2473, 2451, 2426, 2426, 2449, 2477, 2503,
+    2537, 2609, 2715, 2815, 2883, 2932, 2965, 2970,
+    2953, 2930, 2929, 2967, 3017, 3056, 3089, 3121,
+    3185, 3277, 3343, 3378, 3378, 3376, 3385, 3349,
+    3291, 3264, 3246, 3209, 3174, 3163, 3193, 3258,
+    3315, 3361, 3385, 3377, 3372, 3372, 3338, 3251,
+    3163, 3068, 2932, 2807, 2675, 2534, 2433, 2362,
+    2322, 2314, 2331, 2364, 2376, 2350, 2292, 2214,
+    2120, 2012, 1907, 1840, 1802, 1771, 1764, 1746,
+    1706, 1661, 1587, 1504, 1444, 1419, 1420, 1455,
+    1516, 1579, 1640, 1699, 1727, 1725, 1703, 1664,
+    1628, 1624, 1655, 1699, 1741, 1783, 1822, 1836,
+    1818, 1792, 1780, 1799, 1857, 1940, 2039, 2144,
+    2251, 2331, 2360, 2349, 2315, 2264, 2199, 2150,
+    2137, 2145, 2177, 2222, 2254, 2275, 2288, 2285,
+    2271, 2257, 2249, 2257, 2272, 2281, 2286, 2269,
+    2227, 2166, 2100, 2037, 1978, 1938, 1924, 1930,
+    1954, 1988, 2010, 2017, 2007, 1985, 1947, 1910,
+    1885, 1872, 1877, 1884, 1894, 1899, 1897, 1885,
+    1866, 1840, 1814, 1807, 1810, 1823, 1842, 1870,
+    1901, 1926, 1941, 1952, 1960, 1968, 1977, 1987,
+    2003, 2022, 2040, 2058, 2069, 2068, 2065, 2062,
+    2061, 2068, 2082, 2107, 2141, 2176, 2213, 2243,
+    2261, 2262, 2234, 2179, 2126, 2097, 2086, 2073,
+    2058, 2058, 2082, 2107, 2107, 2088, 2059, 2022,
+    1981, 1951, 1924, 1896, 1875, 1861, 1863, 1873,
+    1875, 1868, 1861, 1852, 1834, 1817, 1803, 1788,
+    1766, 1729, 1687, 1655, 1637, 1615, 1587, 1579,
+    1605, 1641, 1678, 1710, 1739, 1767, 1773, 1767,
+    1752, 1738, 1706, 1677, 1654, 1649, 1664, 1682,
+    1694, 1707, 1738, 1773, 1797, 1815, 1836, 1858,
+    1880, 1882, 1877, 1879, 1877, 1869, 1852, 1843,
+    1840, 1840, 1844, 1852, 1862, 1872, 1883, 1890,
+    1894, 1892, 1896, 1906, 1916, 1923, 1931, 1937,
+    1941, 1948, 1950, 1941, 1932, 1931, 1928, 1921,
+    1916, 1910, 1905, 1913, 1931, 1961, 1990, 2008,
+    2024, 2042, 2056, 2063, 2043, 2011, 1982, 1956,
+    1936, 1927, 1932, 1950, 1979, 2012, 2046, 2082,
+    2113, 2128, 2137, 2142, 2148, 2161, 2180, 2196,
+    2213, 2248, 2299, 2350, 2405, 2460, 2499, 2530,
+    2546, 2550, 2556, 2556, 2547, 2548, 2577, 2640,
+    2720, 2786, 2846, 2921, 3004, 3063, 3069, 3056,
+    3055, 3065, 3067, 3060, 3049, 3054, 3077, 3103,
+    3126, 3137, 3145, 3161, 3187, 3206, 3211, 3231,
+    3246, 3242, 3228, 3203, 3182, 3176, 3157, 3118,
+    3075, 3031, 3006, 2990, 2952, 2903, 2849, 2812,
+    2790, 2763, 2745, 2712, 2653, 2579, 2502, 2404,
+    2267, 2098, 1929, 1827, 1771, 1732, 1734, 1804,
+    1919, 2028, 2098, 2107, 2069, 1992, 1851, 1667,
+    1499, 1371, 1291, 1254, 1250, 1289, 1363, 1435,
+    1495, 1544, 1583, 1627, 1676, 1733, 1789, 1827,
+    1845, 1849, 1833, 1798, 1746, 1692, 1667, 1686,
+    1750, 1843, 1955, 2066, 2162, 2232, 2266, 2261,
+    2230, 2198, 2180, 2188, 2219, 2271, 2335, 2398,
+    2437, 2442, 2422, 2386, 2341, 2290, 2242, 2209,
+    2207, 2215, 2226, 2232, 2230, 2232, 2228, 2219,
+    2214, 2219, 2226, 2229, 2216, 2188, 2141, 2071,
+    1991, 1905, 1834, 1782, 1761, 1775, 1819, 1878,
+    1938, 1990, 2025, 2038, 2028, 2001, 1958, 1917,
+    1876, 1841, 1811, 1792, 1783, 1781, 1782, 1793,
+    1813, 1841, 1874, 1912, 1946, 1977, 1996, 2002,
+    2000, 1987, 1971, 1955, 1947, 1952, 1966, 1985,
+    2007, 2032, 2052, 2065, 2076, 2081, 2080, 2083,
+    2090, 2103, 2120, 2139, 2159, 2181, 2201, 2211,
+    2215, 2214, 2204, 2192, 2175, 2156, 2135, 2117,
+    2102, 2086, 2077, 2075, 2081, 2084, 2078, 2081,
+    2093, 2099, 2076, 2020, 1937, 1824, 1714, 1648,
+    1607, 1576, 1560, 1579, 1647, 1740, 1800, 1814,
+    1801, 1770, 1725, 1675, 1627, 1576, 1531, 1481,
+    1439, 1424, 1430, 1437, 1449, 1470, 1511, 1561,
+    1622, 1687, 1744, 1780, 1781, 1758, 1726, 1704,
+    1679, 1638, 1611, 1619, 1643, 1675, 1713, 1751,
+    1786, 1810, 1824, 1833, 1846, 1858, 1865, 1864,
+    1862, 1858, 1856, 1856, 1859, 1858, 1851, 1842,
+    1840, 1843, 1843, 1842, 1842, 1845, 1838, 1830,
+    1827, 1836, 1849, 1863, 1877, 1888, 1902, 1916,
+    1915, 1893, 1865, 1837, 1810, 1797, 1799, 1806,
+    1817, 1834, 1864, 1897, 1929, 1960, 1981, 2007,
+    2031, 2035, 2034, 2028, 2019, 2006, 1982, 1964,
+    1965, 1983, 2006, 2033, 2067, 2104, 2144, 2179,
+    2199, 2203, 2195, 2192, 2185, 2176, 2171, 2173,
+    2194, 2222, 2244, 2259, 2284, 2315, 2342, 2376,
+    2405, 2415, 2426, 2436, 2443, 2460, 2474, 2481,
+    2488, 2505, 2544, 2598, 2652, 2706, 2760, 2798,
+    2814, 2836, 2865, 2865, 2833, 2807, 2795, 2803,
+    2827, 2847, 2877, 2928, 2958, 2979, 3006, 3042,
+    3081, 3090, 3065, 3050, 3061, 3071, 3063, 3036,
+    3006, 2987, 2962, 2932, 2920, 2919, 2895, 2866,
+    2855, 2855, 2853, 2828, 2756, 2623, 2409, 2184,
+    2063, 1996, 1882, 1807, 1871, 2060, 2301, 2485,
+    2555, 2552, 2477, 2278, 1995, 1698, 1429, 1241,
+    1139, 1114, 1204, 1368, 1522, 1640, 1719, 1756,
+    1761, 1742, 1745, 1784, 1820, 1830, 1820, 1789,
+    1722, 1606, 1446, 1308, 1235, 1253, 1354, 1533,
+    1763, 1996, 2199, 2322, 2338, 2264, 2138, 2010,
+    1902, 1827, 1805, 1859, 1970, 2091, 2185, 2220,
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+    2304, 2335, 2342, 2316, 2258, 2188, 2128, 2099,
+    2117, 2163, 2209, 2240, 2237, 2199, 2137, 2062,
+    1982, 1911, 1879, 1900, 1971, 2061, 2149, 2224,
+    2266, 2259, 2213, 2139, 2046, 1958, 1890, 1844,
+    1823, 1821, 1826, 1839, 1859, 1879, 1897, 1923,
+    1966, 2014, 2061, 2091, 2106, 2103, 2069, 2004,
+    1927, 1856, 1808, 1787, 1785, 1809, 1867, 1943,
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+    2186, 2172, 2156, 2140, 2126, 2120, 2121, 2132,
+    2154, 2184, 2218, 2253, 2282, 2309, 2320, 2319,
+    2308, 2289, 2271, 2258, 2243, 2230, 2231, 2233,
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+    2090, 2078, 2077, 2063, 2049, 2059, 2070, 2077,
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+    1762, 1756, 1764, 1774, 1792, 1795, 1793, 1805,
+    1809, 1801, 1789, 1770, 1752, 1739, 1712, 1678,
+    1656, 1643, 1633, 1629, 1646, 1681, 1722, 1753,
+    1776, 1804, 1824, 1830, 1822, 1805, 1784, 1763,
+    1740, 1727, 1731, 1745, 1762, 1776, 1805, 1843,
+    1870, 1883, 1901, 1915, 1917, 1915, 1908, 1901,
+    1899, 1893, 1873, 1862, 1859, 1864, 1870, 1877,
+    1892, 1910, 1927, 1939, 1945, 1944, 1940, 1938,
+    1932, 1922, 1911, 1904, 1908, 1915, 1919, 1923,
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+    2085, 2087, 2099, 2114, 2124, 2130, 2140, 2153,
+    2165, 2178, 2196, 2223, 2250, 2268, 2279, 2292,
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+    2064, 2075, 2086, 2092, 2089, 2095, 2104, 2112,
+    2113, 2104, 2082, 2056, 2033, 2026, 2027, 2025,
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+    1943, 1925, 1878, 1815, 1771, 1740, 1694, 1656,
+    1659, 1689, 1722, 1751, 1766, 1779, 1792, 1791,
+    1778, 1756, 1730, 1697, 1667, 1642, 1629, 1615,
+    1589, 1580, 1583, 1593, 1621, 1656, 1696, 1743,
+    1775, 1796, 1810, 1810, 1797, 1762, 1719, 1681,
+    1649, 1632, 1627, 1640, 1670, 1702, 1741, 1785,
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+    2144, 2152, 2162, 2179, 2203, 2220, 2218, 2197,
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+    2114, 2144, 2169, 2176, 2163, 2141, 2124, 2113,
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+    2065, 2087, 2093, 2090, 2081, 2063, 2039, 2018,
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+    2182, 2172, 2152, 2128, 2104, 2084, 2072, 2073,
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+    2195, 2190, 2186, 2185, 2182, 2172, 2161, 2153,
+    2139, 2125, 2116, 2109, 2103, 2101, 2104, 2118,
+    2141, 2162, 2177, 2188, 2189, 2185, 2173, 2158,
+    2145, 2129, 2114, 2099, 2091, 2085, 2077, 2070,
+    2065, 2058, 2056, 2052, 2051, 2062, 2071, 2077,
+    2080, 2079, 2072, 2059, 2042, 2019, 1997, 1981,
+    1970, 1959, 1958, 1961, 1970, 1976, 1976, 1977,
+    1979, 1976, 1974, 1969, 1960, 1954, 1952, 1951,
+    1949, 1948, 1941, 1937, 1933, 1927, 1923, 1923,
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+    1858, 1846, 1829, 1823, 1829, 1832, 1834, 1849,
+    1874, 1902, 1917, 1920, 1920, 1929, 1941, 1948,
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+    2083, 2080, 2083, 2086, 2086, 2076, 2060, 2049,
+    2052, 2060, 2067, 2076, 2081, 2089, 2101, 2114,
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+    2121, 2117, 2109, 2098, 2093, 2096, 2109, 2119,
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+    1980, 1986, 1990, 1992, 1993, 1994, 1992, 1987,
+    1979, 1975, 1976, 1977, 1973, 1973, 1977, 1986,
+    1995, 2004, 2008, 2018, 2026, 2025, 2026, 2024,
+    2021, 2019, 2013, 2009, 2006, 2005, 2007, 2007,
+    2011, 2018, 2028, 2038, 2047, 2056, 2063, 2074,
+    2083, 2087, 2087, 2089, 2090, 2087, 2086, 2085,
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+    2145, 2153, 2156, 2155, 2150, 2152, 2156, 2158,
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+    2052, 2049, 2045, 2044, 2042, 2039, 2038, 2032,
+    2028, 2025, 2022, 2020, 2015, 2008, 1999, 1993,
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+    2002, 2006, 2009, 2011, 2012, 2015, 2017, 2020,
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+    2035, 2035, 2035, 2033, 2035, 2032, 2030, 2027,
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+    1987, 1986, 1987, 1988, 1989, 1989, 1987, 1990,
+    1992, 1996, 1998, 2002, 2007, 2011, 2015, 2018,
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+    2024, 2024, 2024, 2025, 2027, 2033, 2033, 2034,
+    2038, 2040, 2043, 2041, 2044, 2043, 2042, 2040,
+    2036, 2036, 2038, 2040, 2043, 2044, 2045, 2048,
+    2049, 2055, 2058, 2059, 2061, 2064, 2064, 2064,
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+    2076, 2076, 2073, 2068, 2065, 2061, 2056, 2053,
+    2050, 2044, 2039, 2036, 2032, 2028, 2024, 2024,
+    2021, 2018, 2017, 2017, 2013, 2007, 2006, 2001,
+    1996, 1997, 1992, 1990, 1988, 1982, 1979, 1977,
+    1973, 1970, 1967, 1965, 1963, 1961, 1960, 1958,
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+    1935, 1934, 1934, 1931, 1933, 1935, 1936, 1936,
+    1936, 1937, 1939, 1939, 1942, 1943, 1946, 1945,
+    1944, 1945, 1946, 1948, 1949, 1950, 1952, 1949,
+    1948, 1948, 1947, 1946, 1946, 1949, 1949, 1949,
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+    1980, 1981, 1981, 1983, 1983, 1986, 1987, 1992,
+    1997, 2000, 2002, 2006, 2011, 2016, 2020, 2027,
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+    2084, 2079, 2072, 2068, 2064, 2061, 2055, 2048,
+    2043, 2041, 2034, 2032, 2028, 2022, 2019, 2012,
+    2008, 2005, 2001, 1996, 1991, 1989, 1988, 1985,
+    1982, 1978, 1974, 1972, 1970, 1967, 1964, 1960,
+    1961, 1959, 1955, 1952, 1951, 1949, 1949, 1947,
+    1944, 1945, 1944, 1944, 1942, 1941, 1940, 1937,
+    1934, 1931, 1932, 1931, 1931, 1932, 1932, 1930,
+    1929, 1927, 1926, 1926, 1928, 1931, 1933, 1935,
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+    1965, 1965, 1966, 1968, 1971, 1971, 1972, 1972,
+    1974, 1975, 1975, 1978, 1980, 1980, 1982, 1983,
+    1983, 1984, 1986, 1988, 1992, 1993, 1994, 1997,
+    1996, 1994, 1994, 1998, 1999, 2002, 2004, 2007,
+    2009, 2010, 2012, 2013, 2017, 2020, 2022, 2024,
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+    2049, 2050, 2052, 2055, 2055, 2057, 2060, 2062,
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+    2109, 2109, 2110, 2110, 2109, 2108, 2107, 2103,
+    2102, 2102, 2102, 2101, 2099, 2101, 2098, 2096,
+    2093, 2093, 2094, 2093, 2094, 2095, 2095, 2097,
+    2094, 2090, 2091, 2088, 2084, 2083, 2083, 2082,
+    2079, 2076, 2076, 2076, 2076, 2073, 2073, 2071,
+    2068, 2069, 2068, 2066, 2063, 2063, 2063, 2065,
+    2064, 2063, 2062, 2063, 2065, 2065, 2068, 2068,
+    2066, 2068, 2066, 2062, 2064, 2067, 2063, 2063,
+    2063, 2063, 2064, 2061, 2060, 2062, 2061, 2061,
+    2059, 2061, 2060, 2057, 2059, 2059, 2058, 2058,
+    2055, 2053, 2054, 2052, 2047, 2044, 2041, 2042,
+    2040, 2041, 2041, 2042, 2039, 2039, 2040, 2042,
+    2042, 2040, 2040, 2036, 2036, 2037, 2035, 2034,
+    2034, 2032, 2031, 2028, 2027, 2026, 2023, 2025,
+    2026, 2028, 2027, 2027, 2028, 2026, 2026, 2027,
+    2025, 2022, 2019, 2016, 2011, 2010, 2008, 2008,
+    2004, 2001, 1999, 1998, 1996, 1997, 1994, 1992,
+    1993, 1990, 1989, 1985, 1984, 1983, 1980, 1979,
+    1975, 1970, 1969, 1971, 1970, 1969, 1969, 1969,
+    1970, 1971, 1973, 1975, 1974, 1974, 1974, 1975,
+    1972, 1974, 1974, 1974, 1976, 1972, 1973, 1973,
+    1973, 1973, 1969, 1972, 1972, 1977, 1981, 1984,
+    1987, 1989, 1989, 1990, 1991, 1991, 1990, 1991,
+    1989, 1987, 1985, 1988, 1987, 1986, 1987, 1988,
+    1989, 1988, 1992, 1993, 1992, 1994, 1995, 1995,
+    1994, 1993, 1991, 1994, 1992, 1990, 1992, 1990,
+    1994, 1994, 1997, 1997, 1999, 2001, 2002, 2003,
+    2003, 2003, 2005, 2003, 2000, 2000, 2001, 2003,
+    2004, 2004, 2002, 2002, 2003, 2002, 2002, 2002,
+    2003, 2002, 2001, 2005, 2003, 2001, 2001, 2003,
+    2002, 2001, 2001, 2000, 2002, 2000, 2002, 2002,
+    2002, 2003, 2002, 2005, 2004, 2004, 2008, 2007,
+    2008, 2010, 2013, 2018, 2019, 2020, 2021, 2022,
+    2023, 2023, 2024, 2024, 2022, 2022, 2023, 2025,
+    2026, 2026, 2029, 2030, 2030, 2032, 2032, 2034,
+    2032, 2033, 2031, 2033, 2035, 2036, 2037, 2037,
+    2036, 2035, 2038, 2040, 2040, 2040, 2039, 2039,
+    2040, 2041, 2040, 2040, 2039, 2041, 2040, 2039,
+    2041, 2039, 2038, 2038, 2041, 2042, 2042, 2044,
+    2042, 2042, 2040, 2042, 2044, 2043, 2043, 2045,
+    2045, 2044, 2047, 2048, 2048, 2049, 2050, 2049,
+    2051, 2052, 2053, 2056, 2055, 2055, 2056, 2056,
+    2059, 2056, 2058, 2056, 2055, 2056, 2054, 2058,
+    2059, 2059, 2059, 2058, 2057, 2058, 2056, 2056,
+    2059, 2060, 2060, 2062, 2064, 2064, 2063, 2065,
+    2065, 2066, 2064, 2065, 2067, 2064, 2064, 2064,
+    2066, 2064, 2066, 2064, 2064, 2066, 2065, 2065,
+    2064, 2064, 2063, 2064, 2063, 2063, 2064, 2063,
+    2064, 2066, 2066, 2068, 2068, 2063, 2062, 2062,
+    2063, 2065, 2065, 2063, 2062, 2064, 2064, 2067,
+    2064, 2065, 2066, 2062, 2063, 2064, 2064, 2065,
+    2066, 2064, 2066, 2069, 2069, 2070, 2070, 2070,
+    2068, 2069, 2071, 2073, 2074, 2077, 2076, 2079,
+    2080, 2082, 2082, 2083, 2083, 2082, 2082, 2081,
+    2083, 2083, 2080, 2081, 2081, 2083, 2083, 2083,
+    2083, 2080, 2081, 2084, 2085, 2084, 2085, 2085,
+    2083, 2082, 2080, 2081, 2080, 2080, 2078, 2079,
+    2077, 2076, 2076, 2076, 2078, 2076, 2077, 2078,
+    2080, 2080, 2082, 2084, 2082, 2082, 2082, 2081,
+    2082, 2082, 2083, 2083, 2084, 2085, 2086, 2086,
+    2084, 2085, 2086, 2087, 2087, 2089, 2088, 2085,
+    2086, 2089, 2088, 2087, 2086, 2086, 2086, 2090,
+    2089, 2089, 2090, 2092, 2094, 2095, 2095, 2097,
+    2098, 2099, 2100, 2099, 2101, 2104, 2102, 2101,
+    2101, 2101, 2103, 2102, 2099, 2096, 2097, 2098,
+    2097, 2097, 2099, 2099, 2100, 2100, 2102, 2105,
+    2104, 2100, 2099, 2096, 2097, 2095, 2092, 2094,
+    2092, 2089, 2089, 2088, 2088, 2085, 2085, 2083,
+    2082, 2081, 2080, 2081, 2082, 2082, 2080, 2080,
+    2080, 2079, 2080, 2078, 2076, 2074, 2073, 2073,
+    2073, 2072, 2071, 2067, 2067, 2069, 2070, 2072,
+    2074, 2077, 2078, 2078, 2080, 2078, 2076, 2076,
+    2073, 2073, 2071, 2070, 2071, 2069, 2069, 2069,
+    2069, 2068, 2069, 2069, 2068, 2068, 2068, 2069,
+    2068, 2066, 2064, 2064, 2063, 2062, 2061, 2055,
+    2058, 2059, 2057, 2056, 2055, 2058, 2057, 2055,
+    2054, 2055, 2056, 2055, 2055, 2055, 2052, 2053,
+    2055, 2054, 2055, 2052, 2051, 2051, 2050, 2049,
+    2049, 2050, 2048, 2049, 2049, 2049, 2050, 2052,
+    2052, 2052, 2052, 2053, 2054, 2057, 2057, 2058,
+    2058, 2058, 2061, 2061, 2062, 2064, 2065, 2066,
+    2068, 2067, 2070, 2071, 2073, 2075, 2075, 2076,
+    2078, 2078, 2077, 2076, 2080, 2077, 2079, 2080,
+    2081, 2079, 2076, 2075, 2074, 2077, 2075, 2071,
+    2071, 2070, 2070, 2073, 2073, 2076, 2074, 2071,
+    2072, 2072, 2071, 2072, 2069, 2066, 2064, 2062,
+    2061, 2062, 2063, 2062, 2064, 2062, 2060, 2062,
+    2062, 2061, 2061, 2060, 2056, 2057, 2057, 2055,
+    2056, 2056, 2055, 2056, 2057, 2057, 2058, 2059,
+    2060, 2059, 2062, 2065, 2067, 2068, 2067, 2067,
+    2067, 2066, 2066, 2065, 2063, 2060, 2064, 2067,
+    2067, 2065, 2063, 2062, 2063, 2063, 2061, 2061,
+    2060, 2060, 2059, 2059, 2061, 2060, 2064, 2064,
+    2063, 2062, 2061, 2061, 2060, 2060, 2059, 2057,
+    2056, 2055, 2056, 2058, 2058, 2060, 2058, 2060,
+    2060, 2057, 2056, 2055, 2055, 2054, 2052, 2051,
+    2052, 2048, 2048, 2050, 2051, 2046, 2044, 2043,
+    2045, 2045, 2042, 2044, 2044, 2045, 2046, 2048,
+    2047, 2049, 2045, 2043, 2042, 2042, 2040, 2039,
+    2040, 2039, 2042, 2041, 2042, 2044, 2043, 2041,
+    2040, 2039, 2036, 2038, 2039, 2040, 2042, 2043,
+    2042, 2042, 2043, 2043, 2042, 2042, 2041, 2042,
+    2041, 2044, 2044, 2041, 2042, 2043, 2040, 2041,
+    2040, 2038, 2038, 2036, 2034, 2034, 2035, 2032,
+    2032, 2031, 2032, 2031, 2029, 2030, 2029, 2029,
+    2027, 2025, 2024, 2025, 2022, 2021, 2016, 2012,
+    2012, 2014, 2014, 2014, 2013, 2011, 2010, 2008,
+    2010, 2009, 2008, 2007, 2006, 2008, 2009, 2010,
+    2011, 2008, 2009, 2011, 2010, 2012, 2012, 2011,
+    2011, 2008, 2010, 2012, 2012, 2014, 2014, 2013,
+    2007, 2012, 2017, 2018, 2016, 2013, 2011, 2015,
+    2016, 2018, 2020, 2019, 2018, 2020, 2021, 2023,
+    2024, 2023, 2026, 2024, 2025, 2027, 2027, 2026,
+    2025, 2026, 2026, 2024, 2025, 2024, 2019, 2017,
+    2015, 2012, 2010, 2009, 2010, 2010, 2008, 2005,
+    2007, 2008, 2004, 2002, 1999, 1995, 1994, 1997,
+    1997, 1997, 1996, 1995, 2000, 2001, 1998, 1998,
+    1994, 1994, 1993, 1993, 1990, 1991, 1991, 1991,
+    1996, 1993, 1995, 1995, 1997, 1994, 1994, 1994,
+    1993, 1993, 1990, 1990, 1992, 1994, 1996, 1998,
+    1998, 1998, 2000, 2002, 2001, 2001, 2000, 1998,
+    2003, 2004, 2002, 2003, 2006, 2006, 2007, 2004,
+    2002, 2001, 2000, 2000, 2002, 2001, 2002, 2003,
+    2003, 2005, 2002, 2003, 2004, 2004, 2003, 1999,
+    1996, 1998, 2000, 2001, 2001, 2000, 2001, 2003,
+    2007, 2006, 2006, 2006, 2007, 2005, 2009, 2008,
+    2008, 2011, 2011, 2017, 2016, 2016, 2019, 2021,
+    2022, 2023, 2020, 2019, 2021, 2022, 2022, 2019,
+    2020, 2021, 2022, 2021, 2025, 2027, 2025, 2025,
+    2026, 2028, 2029, 2031, 2029, 2030, 2033, 2034,
+    2034, 2031, 2030, 2032, 2033, 2032, 2033, 2032,
+    2032, 2033, 2033, 2033, 2034, 2033, 2033, 2035,
+    2034, 2032, 2033, 2034, 2030, 2028, 2026, 2026,
+    2029, 2028, 2028, 2027, 2029, 2031, 2033, 2034,
+    2034, 2033, 2032, 2034, 2034, 2032, 2031, 2034,
+    2032, 2034, 2030, 2032, 2033, 2031, 2032, 2031,
+    2030, 2031, 2031, 2030, 2029, 2028, 2027, 2028,
+    2029, 2029, 2027, 2027, 2027, 2028, 2029, 2025,
+    2024, 2022, 2022, 2025, 2026, 2027, 2026, 2027,
+    2030, 2032, 2030, 2030, 2028, 2029, 2028, 2027,
+    2028, 2030, 2032, 2030, 2032, 2033, 2032, 2031,
+    2030, 2033, 2031, 2031, 2034, 2033, 2039, 2039,
+    2039, 2041, 2043, 2043, 2041, 2039, 2038, 2038,
+    2039, 2040, 2041, 2040, 2044, 2044, 2043, 2044,
+    2044, 2047, 2049, 2045, 2046, 2046, 2044, 2046,
+    2046, 2046, 2047, 2043, 2040, 2041, 2040, 2041,
+    2045, 2044, 2044, 2046, 2043, 2042, 2042, 2041,
+    2041, 2041, 2042, 2043, 2043, 2044, 2044, 2042,
+    2042, 2044, 2044, 2044, 2046, 2045, 2046, 2046,
+    2044, 2043, 2044, 2041, 2040, 2042, 2043, 2042,
+    2043, 2047, 2046, 2048, 2045, 2045, 2046, 2046,
+    2045, 2046, 2046, 2044, 2042, 2042, 2043, 2045,
+    2047, 2046, 2046, 2048, 2048, 2049, 2050, 2049,
+    2047, 2047, 2048, 2050, 2050, 2049, 2050, 2050,
+    2051, 2050, 2048, 2048, 2047, 2044, 2044, 2043,
+    2042, 2043, 2041, 2040, 2041, 2039, 2038, 2038,
+    2038, 2038, 2039, 2036, 2034, 2034, 2031, 2031,
+    2031, 2029, 2028, 2027, 2028, 2028, 2026, 2025,
+    2027, 2030, 2028, 2027, 2025, 2024, 2023, 2020,
+    2021, 2020, 2018, 2021, 2021, 2020, 2018, 2020,
+    2019, 2021, 2026, 2027, 2027, 2027, 2028, 2027,
+    2028, 2026, 2029, 2026, 2025, 2028, 2029, 2030,
+    2033, 2034, 2034, 2034, 2036, 2036, 2039, 2041,
+    2041, 2040, 2039, 2036, 2033, 2030, 2032, 2031,
+    2029, 2034, 2039, 2044, 2048, 2051, 2054, 2055,
+    2054, 2057, 2059, 2056, 2053, 2050, 2048, 2044,
+    2037, 2033, 2030, 2026, 2027, 2028, 2031, 2037,
+    2042, 2046, 2051, 2051, 2056, 2056, 2052, 2048,
+    2044, 2037, 2029, 2023, 2014, 2007, 2003, 2002,
+    2001, 1999, 1952, 1835, 1745, 1700, 1674, 1683,
+    1730, 1806, 1892, 1979, 2053, 2095, 2102, 2106,
+    2121, 2130, 2119, 2100, 2071, 2028, 1984, 1947,
+    1918, 1900, 1904, 1935, 1979, 2022, 2068, 2117,
+    2154, 2185, 2200, 2203, 2195, 2171, 2138, 2103,
+    2079, 2045, 2012, 2001, 2006, 2014, 2025, 2046,
+    2071, 2087, 2104, 2123, 2137, 2145, 2147, 2156,
+    2150, 2130, 2105, 2082, 2044, 2005, 1982, 1967,
+    1967, 1976, 1996, 1991, 1900, 1837, 1827, 1801,
+    1808, 1817, 1847, 1897, 1932, 1965, 1973, 1967,
+    1969, 2007, 2030, 2021, 2003, 1972, 1936, 1895,
+    1870, 1845, 1822, 1827, 1856, 1892, 1915, 1937,
+    1964, 1985, 2006, 2025, 2041, 2046, 2029, 2015,
+    2001, 1988, 1969, 1936, 1912, 1908, 1909, 1918,
+    1931, 1948, 1974, 2003, 2029, 2050, 2066, 2074,
+    2075, 2065, 2045, 2027, 2012, 1990, 1967, 1957,
+    1960, 1970, 1981, 1996, 2015, 2026, 2040, 2054,
+    2058, 2051, 2049, 2056, 2058, 2049, 2029, 2008,
+    1991, 1985, 1983, 1975, 1951, 1915, 1878, 1859,
+    1850, 1841, 1846, 1863, 1891, 1923, 1957, 1977,
+    1975, 1960, 1953, 1956, 1965, 1970, 1964, 1957,
+    1943, 1933, 1923, 1910, 1898, 1892, 1897, 1914,
+    1945, 1973, 2000, 2018, 2031, 2040, 2038, 2026,
+    2002, 1975, 1954, 1945, 1942, 1938, 1941, 1951,
+    1964, 1971, 1972, 1970, 1979, 1989, 1996, 2004,
+    2013, 2012, 2009, 2022, 2016, 1991, 1975, 1980,
+    1974, 1947, 1934, 1950, 1976, 2002, 2023, 2035,
+    2041, 2047, 2053, 2046, 2030, 2021, 2017, 2011,
+    2015, 2021, 2010, 1991, 1984, 1996, 2011, 2016,
+    2013, 2008, 2006, 2017, 2024, 2023, 2026, 2032,
+    2031, 2030, 2029, 2025, 2004, 1987, 1996, 2021,
+    2041, 2042, 2035, 2033, 2031, 2026, 2011, 1998,
+    1989, 1977, 1963, 1956, 1957, 1951, 1941, 1935,
+    1939, 1951, 1956, 1956, 1952, 1948, 1950, 1950,
+    1945, 1938, 1908, 1840, 1792, 1779, 1765, 1742,
+    1726, 1745, 1771, 1801, 1839, 1877, 1904, 1924,
+    1950, 1965, 1975, 1976, 1957, 1929, 1906, 1900,
+    1888, 1864, 1847, 1846, 1861, 1881, 1909, 1945,
+    1986, 2019, 2043, 2056, 2062, 2055, 2026, 2000,
+    1988, 1976, 1954, 1935, 1934, 1950, 1972, 1984,
+    1998, 2022, 2047, 2060, 2063, 2064, 2062, 2057,
+    2046, 2040, 2033, 2016, 2000, 1991, 1978, 1969,
+    1972, 1995, 2016, 2028, 2051, 2070, 2071, 2066,
+    2059, 2044, 2023, 2007, 2003, 1999, 1984, 1970,
+    1965, 1963, 1962, 1970, 1982, 1988, 1993, 1996,
+    2001, 2005, 2000, 2001, 1999, 1991, 1984, 1972,
+    1960, 1944, 1929, 1920, 1919, 1935, 1958, 1974,
+    1980, 1991, 2005, 2018, 2015, 1997, 1984, 1971,
+    1956, 1948, 1945, 1940, 1945, 1963, 1973, 1972,
+    1975, 1981, 1986, 1988, 1995, 2009, 2020, 2032,
+    2035, 2026, 2008, 1991, 1973, 1962, 1964, 1971,
+    1981, 1999, 2025, 2050, 2063, 2068, 2062, 2052,
+    2044, 2038, 2033, 2028, 2027, 2028, 2031, 2031,
+    2033, 2029, 2021, 2019, 2017, 2021, 2031, 2044,
+    2058, 2068, 2075, 2074, 2067, 2056, 2044, 2031,
+    2015, 2002, 2000, 1997, 2001, 2010, 2012, 2025,
+    2035, 2041, 2044, 2046, 2048, 2043, 2039, 2035,
+    2036, 2032, 2025, 2016, 2004, 1989, 1982, 1983,
+    1989, 1998, 2008, 2021, 2032, 2036, 2037, 2035,
+    2031, 2021, 2012, 2011, 2008, 2002, 1999, 2000,
+    2001, 2003, 2011, 2021, 2025, 2024, 2027, 2033,
+    2036, 2036, 2038, 2039, 2042, 2040, 2037, 2034,
+    2027, 2019, 2013, 2012, 2013, 2018, 2030, 2043,
+    2057, 2067, 2074, 2075, 2069, 2060, 2051, 2044,
+    2036, 2030, 2031, 2033, 2037, 2040, 2043, 2043,
+    2048, 2053, 2054, 2054, 2061, 2069, 2066, 2060,
+    2059, 2056, 2052, 2050, 2054, 2057, 2053, 2055,
+    2055, 2059, 2060, 2063, 2067, 2069, 2068, 2070,
+    2067, 2058, 2047, 2043, 2042, 2039, 2040, 2047,
+    2051, 2050, 2052, 2055, 2058, 2056, 2055, 2053,
+    2053, 2049, 2047, 2045, 2040, 2036, 2031, 2028,
+    2026, 2026, 2032, 2039, 2047, 2053, 2058, 2061,
+    2060, 2062, 2056, 2046, 2043, 2040, 2040, 2037,
+    2036, 2037, 2041, 2042, 2044, 2048, 2048, 2050,
+    2056, 2062, 2066, 2068, 2071, 2072, 2070, 2069,
+    2066, 2057, 2048, 2044, 2044, 2047, 2050, 2055,
+    2061, 2067, 2072, 2078, 2083, 2085, 2088, 2087,
+    2084, 2083, 2076, 2071, 2067, 2062, 2060, 2060,
+    2058, 2056, 2059, 2065, 2073, 2079, 2088, 2089,
+    2093, 2097, 2097, 2092, 2084, 2078, 2074, 2067,
+    2060, 2058, 2056, 2058, 2058, 2065, 2067, 2073,
+    2077, 2081, 2080, 2074, 2072, 2069, 2067, 2063,
+    2062, 2059, 2061, 2060, 2057, 2055, 2054, 2057,
+    2061, 2065, 2067, 2065, 2063, 2063, 2061, 2058,
+    2053, 2052, 2050, 2051, 2053, 2057, 2059, 2061,
+    2060, 2058, 2060, 2058, 2061, 2068, 2071, 2070,
+    2066, 2069, 2067, 2061, 2055, 2052, 2054, 2054,
+    2055, 2056, 2061, 2063, 2065, 2066, 2071, 2076,
+    2080, 2082, 2081, 2080, 2075, 2068, 2058, 2048,
+    2040, 2036, 2035, 2040, 2050, 2059, 2070, 2083,
+    2092, 2097, 2094, 2091, 2087, 2077, 2070, 2062,
+    2054, 2049, 2048, 2048, 2046, 2044, 2051, 2058,
+    2067, 2075, 2088, 2091, 2085, 2077, 2068, 2063,
+    2056, 2056, 2062, 2064, 2061, 2056, 2051, 2046,
+    2044, 2047, 2050, 2057, 2063, 2064, 2061, 2056,
+    2057, 2059, 2063, 2068, 2068, 2068, 2063, 2054,
+    2043, 2036, 2033, 2035, 2039, 2045, 2048, 2051,
+    2049, 2047, 2048, 2046, 2052, 2057, 2058, 2058,
+    2054, 2046, 2040, 2039, 2036, 2037, 2041, 2045,
+    2049, 2052, 2049, 2042, 2030, 2022, 2020, 2022,
+    2029, 2039, 2048, 2058, 2064, 2062, 2056, 2045,
+    2040, 2036, 2032, 2029, 2024, 2020, 2014, 2012,
+    2016, 2023, 2034, 2043, 2051, 2053, 2052, 2048,
+    2041, 2034, 2030, 2028, 2027, 2024, 2016, 2008,
+    2003, 2001, 2003, 2009, 2019, 2026, 2032, 2033,
+    2033, 2032, 2033, 2036, 2038, 2038, 2034, 2035,
+    2031, 2029, 2024, 2023, 2024, 2027, 2027, 2026,
+    2020, 2017, 2018, 2022, 2026, 2031, 2038, 2039,
+    2038, 2039, 2038, 2036, 2030, 2024, 2022, 2020,
+    2016, 2012, 2011, 2011, 2013, 2018, 2025, 2028,
+    2026, 2024, 2018, 2014, 2008, 2003, 2001, 2007,
+    2014, 2025, 2029, 2026, 2019, 2008, 1999, 1990,
+    1985, 1984, 1989, 1995, 2007, 2015, 2015, 2015,
+    2014, 2013, 2012, 2016, 2016, 2015, 2014, 2008,
+    2001, 1991, 1987, 1984, 1986, 1989, 1995, 2004,
+    2009, 2011, 2010, 2006, 2000, 1996, 1997, 1996,
+    2000, 2000, 1999, 2002, 2001, 2000, 1997, 1994,
+    1989, 1988, 1986, 1981, 1977, 1979, 1982, 1986,
+    1990, 1998, 2000, 2002, 2001, 2000, 1993, 1983,
+    1977, 1970, 1963, 1960, 1963, 1962, 1965, 1966,
+    1967, 1969, 1968, 1972, 1976, 1979, 1983, 1984,
+    1985, 1986, 1982, 1975, 1969, 1963, 1960, 1958,
+    1961, 1965, 1969, 1972, 1976, 1980, 1983, 1988,
+    1989, 1990, 1991, 1990, 1986, 1984, 1983, 1980,
+    1974, 1972, 1973, 1977, 1984, 1992, 1997, 2000,
+    2005, 2009, 2009, 2003, 1998, 1992, 1986, 1983,
+    1977, 1973, 1969, 1968, 1974, 1977, 1984, 1992,
+    1998, 2004, 2001, 1996, 1990, 1986, 1984, 1982,
+    1982, 1986, 1988, 1990, 1988, 1986, 1984, 1984,
+    1983, 1984, 1988, 1993, 1998, 2003, 2005, 2001,
+    1996, 1991, 1986, 1983, 1979, 1982, 1983, 1986,
+    1991, 1992, 1990, 1986, 1984, 1980, 1982, 1982,
+    1984, 1986, 1984, 1987, 1987, 1982, 1984, 1986,
+    1983, 1984, 1985, 1987, 1986, 1985, 1982, 1982,
+    1984, 1985, 1988, 1986, 1988, 1990, 1991, 1992,
+    1993, 1992, 1991, 1991, 1988, 1987, 1990, 1991,
+    1994, 1997, 2001, 2001, 1999, 1995, 1988, 1984,
+    1980, 1976, 1976, 1982, 1985, 1987, 1989, 1991,
+    1993, 1993, 1996, 1999, 2003, 2005, 2004, 2004,
+    2002, 1998, 1994, 1989, 1986, 1984, 1983, 1984,
+    1983, 1981, 1985, 1986, 1986, 1986, 1988, 1992,
+    1997, 2000, 1999, 1996, 1991, 1991, 1988, 1982,
+    1983, 1980, 1981, 1984, 1984, 1985, 1985, 1989,
+    1991, 1994, 1999, 1996, 1994, 1989, 1988, 1988,
+    1979, 1980, 1979, 1980, 1979, 1980, 1982, 1984,
+    1985, 1986, 1988, 1988, 1992, 1991, 1989, 1987,
+    1988, 1987, 1987, 1991, 1994, 1999, 2003, 2001,
+    2000, 1999, 1996, 1991, 1990, 1990, 1991, 1990,
+    1992, 1994, 1993, 1997, 1997, 2002, 2009, 2016,
+    2022, 2025, 2028, 2027, 2024, 2024, 2024, 2022,
+    2025, 2024, 2022, 2021, 2019, 2017, 2014, 2017,
+    2020, 2023, 2026, 2030, 2034, 2036, 2033, 2032,
+    2030, 2029, 2027, 2021, 2019, 2017, 2016, 2019,
+    2027, 2031, 2033, 2035, 2032, 2030, 2024, 2022,
+    2016, 2015, 2017, 2014, 2013, 2013, 2012, 2012,
+    2014, 2017, 2023, 2029, 2033, 2036, 2037, 2034,
+    2032, 2029, 2029, 2029, 2030, 2030, 2032, 2030,
+    2026, 2021, 2019, 2021, 2027, 2033, 2038, 2040,
+    2044, 2047, 2043, 2038, 2035, 2033, 2031, 2030,
+    2030, 2030, 2031, 2033, 2038, 2039, 2038, 2037,
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+    2041, 2042, 2042, 2040, 2036, 2037, 2040, 2040,
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+    2036, 2034, 2033, 2032, 2032, 2032, 2036, 2037,
+    2040, 2041, 2042, 2043, 2047, 2051, 2051, 2049,
+    2047, 2043, 2035, 2031, 2027, 2025, 2026, 2024,
+    2030, 2034, 2036, 2038, 2039, 2045, 2052, 2054,
+    2055, 2054, 2053, 2052, 2051, 2048, 2046, 2044,
+    2048, 2048, 2046, 2046, 2047, 2046, 2047, 2048,
+    2049, 2051, 2051, 2052, 2051, 2052, 2052, 2055,
+    2062, 2064, 2067, 2068, 2066, 2068, 2067, 2066,
+    2069, 2069, 2070, 2072, 2071, 2071, 2067, 2062,
+    2061, 2063, 2064, 2067, 2067, 2067, 2071, 2071,
+    2074, 2079, 2080, 2081, 2080, 2078, 2074, 2072,
+    2068, 2062, 2060, 2061, 2064, 2065, 2069, 2073,
+    2076, 2081, 2084, 2089, 2091, 2094, 2093, 2093,
+    2090, 2086, 2085, 2081, 2081, 2081, 2082, 2082,
+    2081, 2081, 2080, 2078, 2080, 2084, 2086, 2090,
+    2096, 2095, 2095, 2093, 2091, 2085, 2086, 2088,
+    2088, 2090, 2091, 2091, 2089, 2088, 2089, 2088,
+    2087, 2089, 2089, 2092, 2096, 2099, 2102, 2101,
+    2100, 2102, 2102, 2098, 2096, 2092, 2089, 2086,
+    2084, 2086, 2093, 2097, 2105, 2111, 2115, 2116,
+    2114, 2112, 2111, 2112, 2113, 2116, 2114, 2119,
+    2124, 2127, 2122, 2115, 2114, 2111, 2111, 2112,
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+    2114, 2115, 2115, 2115, 2114, 2112, 2111, 2111,
+    2110, 2112, 2115, 2116, 2117, 2119, 2116, 2115,
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+    2106, 2106, 2106, 2106, 2107, 2108, 2108, 2107,
+    2110, 2113, 2115, 2113, 2108, 2103, 2094, 2086,
+    2084, 2086, 2087, 2084, 2085, 2089, 2090, 2091,
+    2096, 2100, 2103, 2105, 2110, 2108, 2105, 2098,
+    2093, 2091, 2087, 2089, 2094, 2099, 2101, 2101,
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+    2108, 2104, 2102, 2102, 2104, 2108, 2113, 2117,
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+    2125, 2126, 2121, 2117, 2111, 2108, 2110, 2112,
+    2116, 2121, 2127, 2129, 2130, 2127, 2128, 2128,
+    2130, 2134, 2137, 2136, 2133, 2129, 2124, 2119,
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+    2124, 2122, 2123, 2125, 2132, 2138, 2144, 2147,
+    2147, 2146, 2144, 2144, 2143, 2143, 2144, 2143,
+    2138, 2133, 2127, 2121, 2118, 2121, 2128, 2135,
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+    2165, 2163, 2165, 2165, 2167, 2169, 2171, 2172,
+    2172, 2171, 2170, 2170, 2173, 2176, 2172, 2171,
+    2171, 2171, 2165, 2160, 2153, 2154, 2159, 2167,
+    2170, 2170, 2171, 2173, 2172, 2170, 2169, 2171,
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+    2173, 2170, 2173, 2175, 2177, 2179, 2185, 2189,
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+    2188, 2188, 2185, 2180, 2174, 2172, 2171, 2170,
+    2173, 2178, 2178, 2178, 2176, 2177, 2177, 2179,
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+    2206, 2203, 2198, 2192, 2186, 2185, 2182, 2179,
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+    2192, 2192, 2188, 2185, 2182, 2181, 2177, 2177,
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+    2172, 2172, 2170, 2169, 2164, 2158, 2153, 2149,
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+    2138, 2140, 2144, 2147, 2148, 2149, 2150, 2147,
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+    2133, 2132, 2131, 2136, 2138, 2142, 2146, 2146,
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+    2123, 2125, 2127, 2128, 2126, 2125, 2123, 2120,
+    2117, 2112, 2110, 2107, 2104, 2102, 2096, 2092,
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+    2087, 2086, 2088, 2090, 2094, 2095, 2095, 2093,
+    2089, 2085, 2081, 2078, 2077, 2075, 2075, 2074,
+    2073, 2073, 2069, 2066, 2065, 2064, 2064, 2062,
+    2064, 2064, 2065, 2067, 2067, 2067, 2066, 2067,
+    2065, 2064, 2064, 2062, 2059, 2055, 2053, 2053,
+    2055, 2054, 2055, 2054, 2054, 2050, 2050, 2051,
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+    2052, 2049, 2047, 2044, 2044, 2046, 2045, 2050,
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+    2052, 2051, 2052, 2049, 2046, 2045, 2046, 2044,
+    2043, 2043, 2043, 2041, 2042, 2043, 2045, 2047,
+    2049, 2050, 2049, 2049, 2047, 2046, 2045, 2041,
+    2042, 2041, 2041, 2038, 2039, 2038, 2036, 2036,
+    2033, 2029, 2030, 2028, 2029, 2033, 2030, 2032,
+    2031, 2030, 2030, 2030, 2029, 2028, 2031, 2030,
+    2031, 2028, 2028, 2029, 2025, 2022, 2019, 2017,
+    2013, 2011, 2010, 2009, 2011, 2012, 2013, 2016,
+    2017, 2019, 2020, 2019, 2018, 2012, 2011, 2012,
+    2012, 2013, 2009, 2008, 2007, 2008, 2008, 2011,
+    2012, 2009, 2008, 2007, 2006, 2004, 2003, 2002,
+    2003, 2001, 2001, 2001, 2002, 2002, 2005, 2004,
+    2005, 2003, 2000, 2000, 1998, 1997, 1996, 1994,
+    1990, 1987, 1983, 1985, 1985, 1988, 1991, 1994,
+    1999, 2000, 1999, 1997, 1998, 1997, 1994, 1994,
+    1993, 1990, 1988, 1985, 1979, 1977, 1977, 1977,
+    1979, 1981, 1978, 1980, 1979, 1982, 1981, 1981,
+    1983, 1983, 1983, 1984, 1983, 1985, 1983, 1977,
+    1976, 1976, 1977, 1976, 1977, 1979, 1977, 1976,
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+    1968, 1967, 1967, 1963, 1965, 1964, 1965, 1967,
+    1969, 1968, 1964, 1962, 1960, 1957, 1955, 1953,
+    1949, 1949, 1948, 1949, 1950, 1951, 1953, 1957,
+    1963, 1964, 1963, 1965, 1960, 1959, 1957, 1951,
+    1948, 1946, 1943, 1941, 1941, 1940, 1937, 1936,
+    1939, 1939, 1941, 1944, 1944, 1945, 1945, 1946,
+    1944, 1945, 1941, 1940, 1940, 1940, 1941, 1939,
+    1935, 1936, 1936, 1934, 1933, 1934, 1935, 1937,
+    1936, 1934, 1938, 1938, 1938, 1938, 1939, 1938,
+    1938, 1939, 1939, 1940, 1937, 1936, 1932, 1933,
+    1933, 1934, 1932, 1933, 1933, 1936, 1937, 1936,
+    1941, 1944, 1946, 1948, 1952, 1954, 1953, 1950,
+    1949, 1947, 1946, 1943, 1942, 1939, 1940, 1940,
+    1940, 1938, 1939, 1940, 1940, 1940, 1942, 1945,
+    1949, 1949, 1947, 1946, 1947, 1944, 1939, 1937,
+    1938, 1936, 1936, 1939, 1937, 1938, 1937, 1935,
+    1934, 1935, 1933, 1932, 1930, 1932, 1932, 1932,
+    1933, 1933, 1936, 1938, 1942, 1945, 1947, 1948,
+    1948, 1952, 1951, 1949, 1947, 1947, 1948, 1946,
+    1945, 1945, 1945, 1946, 1944, 1945, 1948, 1952,
+    1958, 1959, 1962, 1964, 1965, 1963, 1964, 1960,
+    1957, 1956, 1951, 1947, 1943, 1942, 1938, 1939,
+    1935, 1937, 1939, 1940, 1943, 1946, 1949, 1950,
+    1948, 1947, 1948, 1948, 1947, 1943, 1938, 1939,
+    1938, 1937, 1934, 1935, 1933, 1934, 1936, 1940,
+    1941, 1942, 1943, 1943, 1946, 1944, 1944, 1944,
+    1945, 1946, 1946, 1945, 1946, 1945, 1944, 1942,
+    1939, 1936, 1937, 1935, 1935, 1936, 1935, 1937,
+    1938, 1939, 1938, 1939, 1938, 1940, 1938, 1937,
+    1936, 1935, 1932, 1929, 1926, 1925, 1921, 1921,
+    1918, 1915, 1912, 1915, 1916, 1915, 1917, 1918,
+    1921, 1925, 1927, 1924, 1921, 1918, 1920, 1918,
+    1917, 1920, 1924, 1923, 1925, 1925, 1923, 1922,
+    1923, 1926, 1929, 1929, 1932, 1936, 1937, 1936,
+    1934, 1934, 1932, 1934, 1933, 1932, 1932, 1927,
+    1926, 1926, 1926, 1927, 1925, 1924, 1923, 1923,
+    1922, 1923, 1921, 1921, 1921, 1922, 1922, 1923,
+    1922, 1923, 1925, 1926, 1927, 1927, 1927, 1928,
+    1926, 1925, 1922, 1921, 1922, 1922, 1922, 1922,
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+    2095, 2097, 2094, 2094, 2090, 2092, 2093, 2093,
+    2094, 2094, 2094, 2093, 2094, 2094, 2094, 2093,
+    2090, 2093, 2092, 2089, 2092, 2091, 2092, 2088,
+    2088, 2090, 2088, 2087, 2087, 2088, 2087, 2088,
+    2086, 2087, 2087, 2088, 2089, 2085, 2085, 2086,
+    2088, 2087, 2086, 2088, 2087, 2085, 2085, 2086,
+    2087, 2086, 2085, 2084, 2085, 2085, 2087, 2089,
+    2091, 2091, 2086, 2086, 2085, 2083, 2083, 2082,
+    2081, 2084, 2085, 2085, 2082, 2081, 2082, 2080,
+    2082, 2084, 2082, 2082, 2082, 2079, 2080, 2080,
+    2079, 2078, 2077, 2076, 2076, 2075, 2076, 2076,
+    2077, 2074, 2077, 2077, 2075, 2075, 2075, 2074,
+    2074, 2074, 2075, 2075, 2072, 2073, 2071, 2072,
+    2072, 2070, 2070, 2068, 2070, 2068, 2069, 2068,
+    2067, 2068, 2069, 2066, 2063, 2065, 2067, 2065,
+    2065, 2065, 2064, 2064, 2062, 2063, 2062, 2061,
+    2061, 2060, 2063, 2060, 2059, 2058, 2055, 2058,
+    2059, 2059, 2061, 2058, 2057, 2057, 2058, 2058,
+    2058, 2057, 2056, 2054, 2054, 2055, 2056, 2058,
+    2058, 2058, 2054, 2058, 2060, 2059, 2056, 2056,
+    2055, 2056, 2058, 2057, 2057, 2057, 2056, 2056,
+    2057, 2058, 2058, 2058, 2058, 2058, 2058, 2058,
+    2059, 2059, 2059, 2060, 2061, 2060, 2059, 2059,
+    2060, 2061, 2062, 2063, 2065, 2063, 2062, 2061,
+    2062, 2063, 2064, 2064, 2061, 2061, 2062, 2065,
+    2067, 2065, 2068, 2065, 2066, 2066, 2066, 2067,
+    2068, 2069, 2070, 2068, 2068, 2068, 2066, 2066,
+    2066, 2068, 2070, 2068, 2071, 2070, 2068, 2067,
+    2066, 2068, 2069, 2068, 2067, 2069, 2067, 2067,
+    2070, 2069, 2068, 2067, 2066, 2066, 2068, 2069,
+    2069, 2069, 2069, 2071, 2071, 2069, 2070, 2070,
+    2067, 2070, 2072, 2073, 2074, 2073, 2068, 2069,
+    2071, 2073, 2075, 2077, 2080, 2078, 2079, 2078,
+    2078, 2078, 2078, 2077, 2076, 2078, 2076, 2079,
+    2079, 2079, 2078, 2079, 2080, 2079, 2081, 2080,
+    2082, 2084, 2084, 2085, 2085, 2086, 2088, 2089,
+    2087, 2087, 2088, 2090, 2090, 2090, 2091, 2092,
+    2093, 2093, 2092, 2094, 2093, 2095, 2093, 2093,
+    2093, 2094, 2093, 2095, 2096, 2097, 2095, 2092,
+    2097, 2093, 2093, 2094, 2096, 2095, 2092, 2092,
+    2093, 2093, 2093, 2095, 2093, 2092, 2092, 2090,
+    2090, 2091, 2091, 2092, 2094, 2095, 2096, 2094,
+    2096, 2097, 2094, 2097, 2096, 2094, 2096, 2096,
+    2096, 2097, 2097, 2097, 2094, 2095, 2097, 2098,
+    2100, 2099, 2099, 2099, 2098, 2100, 2100, 2097,
+    2099, 2100, 2101, 2100, 2100, 2102, 2102, 2100,
+    2100, 2100, 2102, 2103, 2106, 2104, 2102, 2101,
+    2101, 2101, 2099, 2100, 2102, 2103, 2103, 2103,
+    2102, 2101, 2103, 2105, 2104, 2106, 2104, 2105,
+    2105, 2105, 2105, 2102, 2101, 2102, 2103, 2103,
+    2103, 2102, 2101, 2102, 2103, 2101, 2105, 2102,
+    2103, 2104, 2104, 2103, 2104, 2104, 2103, 2105,
+    2103, 2102, 2103, 2103, 2105, 2104, 2101, 2100,
+    2099, 2099, 2100, 2101, 2101, 2099, 2100, 2100,
+    2101, 2103, 2104, 2104, 2105, 2103, 2103, 2104,
+    2103, 2103, 2102, 2100, 2100, 2101, 2101, 2100,
+    2101, 2099, 2098, 2099, 2099, 2102, 2101, 2099,
+    2099, 2098, 2100, 2103, 2103, 2104, 2107, 2106,
+    2108, 2107, 2105, 2107, 2104, 2104, 2105, 2105,
+    2104, 2104, 2107, 2107, 2107, 2108, 2107, 2108,
+    2108, 2109, 2110, 2111, 2112, 2111, 2110, 2110,
+    2111, 2110, 2111, 2112, 2113, 2114, 2114, 2112,
+    2112, 2112, 2116, 2116, 2115, 2116, 2116, 2118,
+    2119, 2120, 2119, 2121, 2122, 2120, 2122, 2125,
+    2125, 2124, 2124, 2125, 2124, 2123, 2123, 2123,
+    2121, 2122, 2122, 2125, 2124, 2123, 2124, 2126,
+    2123, 2125, 2126, 2126, 2125, 2125, 2124, 2125,
+    2125, 2124, 2126, 2126, 2127, 2127, 2125, 2127,
+    2126, 2128, 2128, 2126, 2127, 2129, 2129, 2131,
+    2131, 2131, 2131, 2132, 2130, 2130, 2132, 2132,
+    2132, 2130, 2132, 2132, 2134, 2136, 2136, 2137,
+    2139, 2138, 2138, 2136, 2136, 2136, 2135, 2132,
+    2133, 2132, 2133, 2133, 2132, 2134, 2132, 2133,
+    2136, 2131, 2132, 2133, 2133, 2135, 2134, 2134,
+    2133, 2132, 2132, 2133, 2135, 2133, 2133, 2132,
+    2133, 2133, 2133, 2134, 2135, 2136, 2135, 2133,
+    2135, 2137, 2136, 2136, 2137, 2136, 2139, 2138,
+    2137, 2138, 2137, 2139, 2138, 2138, 2139, 2139,
+    2137, 2137, 2139, 2136, 2132, 2134, 2134, 2132,
+    2130, 2132, 2132, 2129, 2128, 2126, 2126, 2128,
+    2129, 2128, 2127, 2128, 2128, 2127, 2129, 2130,
+    2130, 2128, 2128, 2128, 2129, 2129, 2131, 2132,
+    2130, 2128, 2129, 2130, 2128, 2127, 2128, 2128,
+    2128, 2128, 2129, 2131, 2131, 2132, 2132, 2132,
+    2131, 2132, 2131, 2130, 2130, 2132, 2131, 2127,
+    2130, 2127, 2127, 2127, 2128, 2124, 2123, 2124,
+    2124, 2124, 2124, 2125, 2124, 2122, 2121, 2121,
+    2119, 2120, 2119, 2118, 2117, 2118, 2118, 2114,
+    2114, 2113, 2113, 2115, 2112, 2114, 2114, 2111,
+    2111, 2111, 2111, 2109, 2110, 2110, 2109, 2108,
+    2111, 2113, 2110, 2110, 2107, 2109, 2108, 2106,
+    2108, 2106, 2107, 2106, 2108, 2109, 2109, 2108,
+    2108, 2109, 2108, 2107, 2110, 2108, 2104, 2103,
+    2105, 2106, 2104, 2104, 2103, 2103, 2102, 2102,
+    2102, 2103, 2103, 2101, 2102, 2101, 2103, 2106,
+    2105, 2102, 2104, 2103, 2102, 2100, 2101, 2102,
+    2099, 2101, 2102, 2104, 2102, 2101, 2101, 2101,
+    2103, 2102, 2103, 2105, 2103, 2104, 2102, 2102
+};
diff --git a/keyboards/planck/keymaps/synth_wavetable/config.h b/keyboards/planck/keymaps/synth_wavetable/config.h
new file mode 100644
index 000000000..930b26b00
--- /dev/null
+++ b/keyboards/planck/keymaps/synth_wavetable/config.h
@@ -0,0 +1,56 @@
+/*
+Copyright 2020 Jack Humbert
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#pragma once
+#ifdef AUDIO_ENABLE
+    #define AUDIO_PIN A5
+    #define STARTUP_SONG SONG(PLANCK_SOUND)
+    // #define STARTUP_SONG SONG(NO_SOUND)
+    #define DEFAULT_LAYER_SONGS { SONG(QWERTY_SOUND), \
+                                  SONG(COLEMAK_SOUND), \
+                                  SONG(DVORAK_SOUND) \
+                                }
+#endif
+/*
+ * MIDI options
+ */
+/* Prevent use of disabled MIDI features in the keymap */
+//#define MIDI_ENABLE_STRICT 1
+/* enable basic MIDI features:
+   - MIDI notes can be sent when in Music mode is on
+*/
+#define MIDI_BASIC
+/* enable advanced MIDI features:
+   - MIDI notes can be added to the keymap
+   - Octave shift and transpose
+   - Virtual sustain, portamento, and modulation wheel
+   - etc.
+*/
+//#define MIDI_ADVANCED
+/* override number of MIDI tone keycodes (each octave adds 12 keycodes and allocates 12 bytes) */
+//#define MIDI_TONE_KEYCODE_OCTAVES 2
+// Most tactile encoders have detents every 4 stages
+#define ENCODER_RESOLUTION 4
diff --git a/keyboards/planck/keymaps/synth_wavetable/keymap.c b/keyboards/planck/keymaps/synth_wavetable/keymap.c
new file mode 100644
index 000000000..a0d710679
--- /dev/null
+++ b/keyboards/planck/keymaps/synth_wavetable/keymap.c
@@ -0,0 +1,320 @@
+/* Copyright 2019 Jack Humbert
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include QMK_KEYBOARD_H
+enum planck_layers {
+  _QWERTY,
+  _COLEMAK,
+  _DVORAK,
+  _LOWER,
+  _RAISE,
+  _PLOVER,
+  _ADJUST
+};
+enum planck_keycodes {
+  QWERTY = SAFE_RANGE,
+  COLEMAK,
+  DVORAK,
+  PLOVER,
+  BACKLIT,
+  EXT_PLV
+};
+#define LOWER MO(_LOWER)
+#define RAISE MO(_RAISE)
+const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
+/* Qwerty
+ * ,-----------------------------------------------------------------------------------.
+ * | Tab  |   Q  |   W  |   E  |   R  |   T  |   Y  |   U  |   I  |   O  |   P  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Esc  |   A  |   S  |   D  |   F  |   G  |   H  |   J  |   K  |   L  |   ;  |  "   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | Shift|   Z  |   X  |   C  |   V  |   B  |   N  |   M  |   ,  |   .  |   /  |Enter |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Brite| Ctrl | Alt  | GUI  |Lower |    Space    |Raise | Left | Down |  Up  |Right |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_QWERTY] = LAYOUT_planck_grid(
+    KC_TAB,  KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_BSPC,
+    KC_ESC,  KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,
+    KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_N,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT ,
+    BACKLIT, KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT
+),
+/* Colemak
+ * ,-----------------------------------------------------------------------------------.
+ * | Tab  |   Q  |   W  |   F  |   P  |   G  |   J  |   L  |   U  |   Y  |   ;  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Esc  |   A  |   R  |   S  |   T  |   D  |   H  |   N  |   E  |   I  |   O  |  "   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | Shift|   Z  |   X  |   C  |   V  |   B  |   K  |   M  |   ,  |   .  |   /  |Enter |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Brite| Ctrl | Alt  | GUI  |Lower |    Space    |Raise | Left | Down |  Up  |Right |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_COLEMAK] = LAYOUT_planck_grid(
+    KC_TAB,  KC_Q,    KC_W,    KC_F,    KC_P,    KC_G,    KC_J,    KC_L,    KC_U,    KC_Y,    KC_SCLN, KC_BSPC,
+    KC_ESC,  KC_A,    KC_R,    KC_S,    KC_T,    KC_D,    KC_H,    KC_N,    KC_E,    KC_I,    KC_O,    KC_QUOT,
+    KC_LSFT, KC_Z,    KC_X,    KC_C,    KC_V,    KC_B,    KC_K,    KC_M,    KC_COMM, KC_DOT,  KC_SLSH, KC_ENT ,
+    BACKLIT, KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT
+),
+/* Dvorak
+ * ,-----------------------------------------------------------------------------------.
+ * | Tab  |   "  |   ,  |   .  |   P  |   Y  |   F  |   G  |   C  |   R  |   L  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Esc  |   A  |   O  |   E  |   U  |   I  |   D  |   H  |   T  |   N  |   S  |  /   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * | Shift|   ;  |   Q  |   J  |   K  |   X  |   B  |   M  |   W  |   V  |   Z  |Enter |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Brite| Ctrl | Alt  | GUI  |Lower |    Space    |Raise | Left | Down |  Up  |Right |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_DVORAK] = LAYOUT_planck_grid(
+    KC_TAB,  KC_QUOT, KC_COMM, KC_DOT,  KC_P,    KC_Y,    KC_F,    KC_G,    KC_C,    KC_R,    KC_L,    KC_BSPC,
+    KC_ESC,  KC_A,    KC_O,    KC_E,    KC_U,    KC_I,    KC_D,    KC_H,    KC_T,    KC_N,    KC_S,    KC_SLSH,
+    KC_LSFT, KC_SCLN, KC_Q,    KC_J,    KC_K,    KC_X,    KC_B,    KC_M,    KC_W,    KC_V,    KC_Z,    KC_ENT ,
+    BACKLIT, KC_LCTL, KC_LALT, KC_LGUI, LOWER,   KC_SPC,  KC_SPC,  RAISE,   KC_LEFT, KC_DOWN, KC_UP,   KC_RGHT
+),
+/* Lower
+ * ,-----------------------------------------------------------------------------------.
+ * |   ~  |   !  |   @  |   #  |   $  |   %  |   ^  |   &  |   *  |   (  |   )  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Del  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   _  |   +  |   {  |   }  |  |   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |ISO ~ |ISO | | Home | End  |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_LOWER] = LAYOUT_planck_grid(
+    KC_TILD, KC_EXLM, KC_AT,   KC_HASH, KC_DLR,  KC_PERC, KC_CIRC, KC_AMPR,    KC_ASTR,    KC_LPRN, KC_RPRN, KC_BSPC,
+    KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_UNDS,    KC_PLUS,    KC_LCBR, KC_RCBR, KC_PIPE,
+    _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  S(KC_NUHS), S(KC_NUBS), KC_HOME, KC_END,  _______,
+    _______, _______, _______, _______, _______, _______, _______, _______,    KC_MNXT,    KC_VOLD, KC_VOLU, KC_MPLY
+),
+/* Raise
+ * ,-----------------------------------------------------------------------------------.
+ * |   `  |   1  |   2  |   3  |   4  |   5  |   6  |   7  |   8  |   9  |   0  | Bksp |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * | Del  |  F1  |  F2  |  F3  |  F4  |  F5  |  F6  |   -  |   =  |   [  |   ]  |  \   |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |  F7  |  F8  |  F9  |  F10 |  F11 |  F12 |ISO # |ISO / |Pg Up |Pg Dn |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      | Next | Vol- | Vol+ | Play |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_RAISE] = LAYOUT_planck_grid(
+    KC_GRV,  KC_1,    KC_2,    KC_3,    KC_4,    KC_5,    KC_6,    KC_7,    KC_8,    KC_9,    KC_0,    KC_BSPC,
+    KC_DEL,  KC_F1,   KC_F2,   KC_F3,   KC_F4,   KC_F5,   KC_F6,   KC_MINS, KC_EQL,  KC_LBRC, KC_RBRC, KC_BSLS,
+    _______, KC_F7,   KC_F8,   KC_F9,   KC_F10,  KC_F11,  KC_F12,  KC_NUHS, KC_NUBS, KC_PGUP, KC_PGDN, _______,
+    _______, _______, _______, _______, _______, _______, _______, _______, KC_MNXT, KC_VOLD, KC_VOLU, KC_MPLY
+),
+/* Plover layer (http://opensteno.org)
+ * ,-----------------------------------------------------------------------------------.
+ * |   #  |   #  |   #  |   #  |   #  |   #  |   #  |   #  |   #  |   #  |   #  |   #  |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |   S  |   T  |   P  |   H  |   *  |   *  |   F  |   P  |   L  |   T  |   D  |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |   S  |   K  |   W  |   R  |   *  |   *  |   R  |   B  |   G  |   S  |   Z  |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * | Exit |      |      |   A  |   O  |             |   E  |   U  |      |      |      |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_PLOVER] = LAYOUT_planck_grid(
+    KC_1,    KC_1,    KC_1,    KC_1,    KC_1,    KC_1,    KC_1,    KC_1,    KC_1,    KC_1,    KC_1,    KC_1   ,
+    XXXXXXX, KC_Q,    KC_W,    KC_E,    KC_R,    KC_T,    KC_Y,    KC_U,    KC_I,    KC_O,    KC_P,    KC_LBRC,
+    XXXXXXX, KC_A,    KC_S,    KC_D,    KC_F,    KC_G,    KC_H,    KC_J,    KC_K,    KC_L,    KC_SCLN, KC_QUOT,
+    EXT_PLV, XXXXXXX, XXXXXXX, KC_C,    KC_V,    XXXXXXX, XXXXXXX, KC_N,    KC_M,    XXXXXXX, XXXXXXX, XXXXXXX
+),
+/* Adjust (Lower + Raise)
+ * ,-----------------------------------------------------------------------------------.
+ * |      | Reset|      |      |      |      |      |      |      |      |      |  Del |
+ * |------+------+------+------+------+-------------+------+------+------+------+------|
+ * |      |      |      |Aud on|Audoff|AGnorm|AGswap|Qwerty|Colemk|Dvorak|Plover|      |
+ * |------+------+------+------+------+------|------+------+------+------+------+------|
+ * |      |Voice-|Voice+|Mus on|Musoff|MIDIon|MIDIof|      |      |      |      |      |
+ * |------+------+------+------+------+------+------+------+------+------+------+------|
+ * |      |      |      |      |      |             |      |      |      |      |      |
+ * `-----------------------------------------------------------------------------------'
+ */
+[_ADJUST] = LAYOUT_planck_grid(
+    _______, RESET,   DEBUG,   RGB_TOG, RGB_MOD, RGB_HUI, RGB_HUD, RGB_SAI, RGB_SAD,  RGB_VAI, RGB_VAD, KC_DEL ,
+    _______, _______, MU_MOD,  AU_ON,   AU_OFF,  AG_NORM, AG_SWAP, QWERTY,  COLEMAK,  DVORAK,  PLOVER,  _______,
+    _______, MUV_DE,  MUV_IN,  MU_ON,   MU_OFF,  MI_ON,   MI_OFF,  TERM_ON, TERM_OFF, _______, _______, _______,
+    _______, _______, _______, _______, _______, _______, _______, _______, _______,  _______, _______, _______
+)
+};
+#ifdef AUDIO_ENABLE
+  float plover_song[][2]     = SONG(PLOVER_SOUND);
+  float plover_gb_song[][2]  = SONG(PLOVER_GOODBYE_SOUND);
+#endif
+uint32_t layer_state_set_user(uint32_t state) {
+  return update_tri_layer_state(state, _LOWER, _RAISE, _ADJUST);
+}
+bool process_record_user(uint16_t keycode, keyrecord_t *record) {
+  switch (keycode) {
+    case QWERTY:
+      if (record->event.pressed) {
+        print("mode just switched to qwerty and this is a huge string\n");
+        set_single_persistent_default_layer(_QWERTY);
+      }
+      return false;
+      break;
+    case COLEMAK:
+      if (record->event.pressed) {
+        set_single_persistent_default_layer(_COLEMAK);
+      }
+      return false;
+      break;
+    case DVORAK:
+      if (record->event.pressed) {
+        set_single_persistent_default_layer(_DVORAK);
+      }
+      return false;
+      break;
+    case BACKLIT:
+      if (record->event.pressed) {
+        register_code(KC_RSFT);
+        #ifdef BACKLIGHT_ENABLE
+          backlight_step();
+        #endif
+        #ifdef KEYBOARD_planck_rev5
+          PORTE &= ~(1<<6);
+        #endif
+      } else {
+        unregister_code(KC_RSFT);
+        #ifdef KEYBOARD_planck_rev5
+          PORTE |= (1<<6);
+        #endif
+      }
+      return false;
+      break;
+    case PLOVER:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          stop_all_notes();
+          PLAY_SONG(plover_song);
+        #endif
+        layer_off(_RAISE);
+        layer_off(_LOWER);
+        layer_off(_ADJUST);
+        layer_on(_PLOVER);
+        if (!eeconfig_is_enabled()) {
+            eeconfig_init();
+        }
+        keymap_config.raw = eeconfig_read_keymap();
+        keymap_config.nkro = 1;
+        eeconfig_update_keymap(keymap_config.raw);
+      }
+      return false;
+      break;
+    case EXT_PLV:
+      if (record->event.pressed) {
+        #ifdef AUDIO_ENABLE
+          PLAY_SONG(plover_gb_song);
+        #endif
+        layer_off(_PLOVER);
+      }
+      return false;
+      break;
+  }
+  return true;
+}
+void matrix_scan_user(void) {
+}
+bool music_mask_user(uint16_t keycode) {
+  switch (keycode) {
+    case RAISE:
+    case LOWER:
+      return false;
+    default:
+      return true;
+  }
+}
+#include "wavetable.h"
+float dac_if[8] = {0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0};
+uint8_t dac_morph = 0;
+uint16_t dac_value_generate(void) {
+  uint16_t value = AUDIO_DAC_OFF_VALUE;
+  uint8_t active_tones = audio_get_number_of_active_tones();
+  if (active_tones > AUDIO_MAX_SIMULTANEOUS_TONES)
+    active_tones = AUDIO_MAX_SIMULTANEOUS_TONES;
+  if (active_tones > 0) {
+    uint16_t value_avg = 0;
+    for (uint8_t i = 0; i < active_tones; i++) {
+      dac_if[i] = dac_if[i]
+          + ((audio_get_frequency(i) * AUDIO_DAC_BUFFER_SIZE) / AUDIO_DAC_SAMPLE_RATE)
+          * 2/3; // necessary to adjust for the gpt-timer frequency (three times the sample rate) and the dac-conversion beeing called twice per sample
+      // Needed because % doesn't work with floats
+      while (dac_if[i] >= (AUDIO_DAC_BUFFER_SIZE))
+        dac_if[i] = dac_if[i] - AUDIO_DAC_BUFFER_SIZE;
+      // #define AUDIO_DAC_MORPH_SPEED 372
+      // #define AUDIO_DAC_MORPH_SPEED_COMPUTED (AUDIO_DAC_SAMPLE_RATE / AUDIO_DAC_WAVETABLE_CUSTOM_LENGTH * (1000 / AUDIO_DAC_MORPH_SPEED))
+      uint16_t dac_i = (uint16_t)dac_if[i];
+      // value_avg += dac_buffer_custom[dac_morph_flipped][dac_i] / active_tones / 2 * ((dac_morph >= 63) ? 6400 - dac_morph_counter : dac_morph_counter) / 6400;
+      // value_avg += dac_buffer_custom[dac_morph_flipped + 1][dac_i] / active_tones / 2 * ((dac_morph >= 63) ? dac_morph_counter : 6400 - dac_morph_counter) / 6400;
+      // value_avg += dac_wavetable_custom[dac_morph][dac_i] / active_tones / 2 * (AUDIO_DAC_MORPH_SPEED_COMPUTED - dac_morph_counter) / AUDIO_DAC_MORPH_SPEED_COMPUTED;
+      // value_avg += dac_wavetable_custom[dac_morph + 1][dac_i] / active_tones / 2 * dac_morph_counter / AUDIO_DAC_MORPH_SPEED_COMPUTED;
+      value_avg += dac_wavetable_custom[dac_morph][dac_i] / active_tones;
+    }
+    value = value_avg;
+    // dac_morph_counter++;
+    // if (dac_morph_counter >= AUDIO_DAC_MORPH_SPEED_COMPUTED) {
+      // dac_morph_counter = 0;
+      // dac_morph = (dac_morph + 1) % 125;
+      // dac_morph_flipped = ((dac_morph >= 63) ? (125 - dac_morph) : dac_morph);
+      // dac_morph = (dac_morph + 1) % (AUDIO_DAC_WAVETABLE_CUSTOM_LENGTH - 1);
+    // }
+  }
+  return value;
+}
+void encoder_update(bool clockwise) {
+  if (clockwise) {
+    dac_morph = (dac_morph + 1) % AUDIO_DAC_WAVETABLE_CUSTOM_LENGTH;
+  } else {
+    if (dac_morph == 0)
+      dac_morph = (AUDIO_DAC_WAVETABLE_CUSTOM_LENGTH - 1);
+    else
+      dac_morph--;
+  }
+}
diff --git a/keyboards/planck/keymaps/synth_wavetable/rules.mk b/keyboards/planck/keymaps/synth_wavetable/rules.mk
new file mode 100644
index 000000000..ebfcda221
--- /dev/null
+++ b/keyboards/planck/keymaps/synth_wavetable/rules.mk
@@ -0,0 +1,2 @@
+AUDIO_ENABLE = yes
+AUDIO_DRIVER = dac_additive
diff --git a/keyboards/planck/keymaps/synth_wavetable/wavetable.h b/keyboards/planck/keymaps/synth_wavetable/wavetable.h
new file mode 100644
index 000000000..89a0eefcb
--- /dev/null
+++ b/keyboards/planck/keymaps/synth_wavetable/wavetable.h
@@ -0,0 +1,2197 @@
+/*
+Copyright 2020 Jack Humbert
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 2 of the License, or
+(at your option) any later version.
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#define AUDIO_DAC_WAVETABLE_CUSTOM_LENGTH 64
+static const dacsample_t dac_wavetable_custom[64][256] = {
+  {
+    3038, 4095, 3745, 3945, 3779, 3889, 3782, 3850,
+    3775, 3817, 3766, 3788, 3755, 3762, 3743, 3738, 
+    3729, 3716, 3715, 3695, 3700, 3676, 3683, 3658,
+    3667, 3642, 3649, 3626, 3632, 3611, 3614, 3596,
+    3596, 3581, 3579, 3567, 3561, 3552, 3544, 3537,
+    3528, 3522, 3511, 3507, 3495, 3491, 3479, 3476,
+    3464, 3460, 3449, 3444, 3433, 3428, 3419, 3412,
+    3404, 3397, 3389, 3382, 3374, 3366, 3359, 3351,
+    3345, 3336, 3330, 3322, 3314, 3307, 3299, 3293,
+    3285, 3279, 3270, 3265, 3255, 3251, 3241, 3237,
+    3227, 3223, 3213, 3208, 3200, 3194, 3187, 3179,
+    3173, 3165, 3161, 3150, 3149, 3136, 3137, 3121,
+    3125, 3107, 3112, 3093, 3099, 3080, 3086, 3068,
+    3072, 3056, 3058, 3045, 3043, 3036, 3027, 3027,
+    3010, 3019, 2992, 3013, 2974, 3007, 2955, 3002,
+    2935, 2999, 2913, 2998, 2886, 3006, 2842, 3067,
+    2464, 221, 205, 228, 215, 260, 231, 285,
+    249, 307, 270, 326, 291, 344, 313, 359,
+    335, 374, 357, 388, 378, 403, 399, 416,
+    419, 431, 438, 445, 457, 460, 475, 476,
+    492, 492, 509, 508, 525, 524, 540, 541,
+    555, 558, 571, 574, 586, 591, 601, 607,
+    616, 624, 631, 639, 647, 656, 662, 671,
+    677, 687, 692, 702, 708, 718, 723, 733,
+    738, 748, 753, 763, 768, 777, 783, 792,
+    798, 806, 812, 820, 827, 834, 842, 848,
+    857, 862, 872, 875, 887, 888, 901, 902,
+    915, 915, 929, 929, 943, 942, 956, 956,
+    969, 971, 981, 986, 992, 1001, 1003, 1017,
+    1013, 1032, 1023, 1048, 1033, 1064, 1043, 1079,
+    1054, 1093, 1065, 1106, 1078, 1118, 1092, 1127,
+    1109, 1132, 1130, 1132, 1160, 1118, 1217, 1036
+  },
+  {
+    2048, 2049, 2056, 2071, 2096, 2130, 2174, 2225,
+    2280, 2337, 2392, 2444, 2490, 2529, 2559, 2581,
+    2593, 2597, 2594, 2589, 2585, 2588, 2603, 2635,
+    2685, 2755, 2842, 2943, 3050, 3157, 3258, 3347,
+    3423, 3485, 3535, 3577, 3612, 3641, 3665, 3682,
+    3692, 3694, 3692, 3689, 3690, 3700, 3724, 3761,
+    3811, 3867, 3924, 3972, 4005, 4019, 4013, 3993,
+    3964, 3936, 3915, 3906, 3912, 3931, 3959, 3990,
+    4020, 4043, 4059, 4067, 4068, 4063, 4051, 4030,
+    3997, 3946, 3875, 3782, 3671, 3546, 3419, 3299,
+    3197, 3120, 3072, 3053, 3062, 3091, 3133, 3180,
+    3224, 3257, 3276, 3277, 3259, 3221, 3163, 3084,
+    2986, 2870, 2741, 2607, 2474, 2351, 2245, 2161,
+    2102, 2069, 2058, 2067, 2091, 2124, 2160, 2195,
+    2222, 2239, 2245, 2238, 2219, 2191, 2155, 2116,
+    2077, 2042, 2014, 1995, 1987, 1991, 2003, 2023,
+    2048, 2074, 2101, 2124, 2144, 2158, 2166, 2170,
+    2172, 2175, 2181, 2195, 2221, 2260, 2315, 2384,
+    2465, 2555, 2648, 2740, 2826, 2903, 2971, 3029,
+    3076, 3114, 3142, 3159, 3167, 3167, 3160, 3153,
+    3150, 3157, 3180, 3222, 3283, 3362, 3452, 3546,
+    3636, 3715, 3777, 3823, 3854, 3874, 3889, 3905,
+    3923, 3944, 3968, 3989, 4007, 4019, 4026, 4030,
+    4033, 4040, 4051, 4066, 4081, 4090, 4086, 4063,
+    4019, 3956, 3878, 3794, 3716, 3651, 3606, 3586,
+    3589, 3612, 3647, 3688, 3728, 3760, 3781, 3787,
+    3780, 3757, 3718, 3661, 3584, 3485, 3366, 3230,
+    3085, 2938, 2801, 2683, 2589, 2525, 2492, 2486,
+    2503, 2537, 2580, 2624, 2663, 2691, 2703, 2698,
+    2674, 2633, 2574, 2500, 2415, 2322, 2228, 2139,
+    2059, 1994, 1945, 1914, 1900, 1901, 1913, 1933,
+    1957, 1983, 2006, 2025, 2038, 2046, 2049, 2048
+  },
+  {
+    2048, 2053, 2074, 2119, 2191, 2291, 2416, 2559,
+    2710, 2860, 3000, 3124, 3225, 3301, 3350, 3371,
+    3364, 3334, 3288, 3234, 3182, 3144, 3127, 3137,
+    3173, 3231, 3304, 3378, 3441, 3483, 3495, 3475,
+    3423, 3344, 3243, 3128, 3002, 2867, 2726, 2581,
+    2433, 2286, 2142, 2001, 1865, 1731, 1597, 1460,
+    1317, 1171, 1023, 881, 750, 637, 546, 476,
+    423, 380, 341, 300, 254, 205, 154, 109,
+    75, 56, 55, 72, 105, 153, 217, 296,
+    395, 513, 651, 806, 972, 1139, 1299, 1444,
+    1572, 1680, 1772, 1855, 1935, 2018, 2110, 2212,
+    2323, 2442, 2563, 2680, 2786, 2877, 2944, 2982,
+    2986, 2951, 2877, 2771, 2640, 2498, 2360, 2238,
+    2145, 2087, 2069, 2088, 2140, 2215, 2303, 2392,
+    2469, 2524, 2550, 2543, 2505, 2437, 2346, 2241,
+    2132, 2031, 1949, 1893, 1870, 1878, 1915, 1974,
+    2048, 2128, 2206, 2276, 2332, 2371, 2394, 2402,
+    2403, 2404, 2417, 2449, 2510, 2603, 2728, 2882,
+    3056, 3236, 3410, 3564, 3690, 3783, 3842, 3868,
+    3864, 3833, 3777, 3700, 3604, 3495, 3378, 3261,
+    3150, 3048, 2958, 2877, 2801, 2723, 2637, 2536,
+    2420, 2289, 2146, 1997, 1847, 1698, 1552, 1410,
+    1271, 1133, 999, 870, 748, 637, 536, 446,
+    364, 288, 216, 150, 92, 49, 29, 37,
+    76, 144, 235, 339, 444, 541, 623, 689,
+    741, 784, 826, 874, 933, 1009, 1101, 1209,
+    1330, 1461, 1598, 1739, 1877, 2007, 2123, 2219,
+    2291, 2338, 2364, 2374, 2378, 2385, 2404, 2443,
+    2503, 2585, 2684, 2794, 2904, 3004, 3084, 3136,
+    3154, 3133, 3070, 2965, 2823, 2650, 2458, 2261,
+    2075, 1914, 1787, 1701, 1656, 1649, 1675, 1726,
+    1791, 1861, 1927, 1981, 2020, 2043, 2051, 2050
+  },
+  {
+    2048, 2051, 2065, 2095, 2144, 2212, 2298, 2397,
+    2504, 2612, 2716, 2811, 2894, 2961, 3011, 3042,
+    3055, 3052, 3036, 3014, 2996, 2988, 3001, 3040,
+    3108, 3204, 3324, 3459, 3598, 3728, 3841, 3930,
+    3992, 4029, 4045, 4045, 4032, 4009, 3975, 3930,
+    3874, 3809, 3738, 3665, 3596, 3534, 3481, 3436,
+    3397, 3357, 3312, 3255, 3184, 3099, 3003, 2900,
+    2795, 2693, 2595, 2503, 2413, 2325, 2235, 2143,
+    2048, 1950, 1850, 1750, 1651, 1554, 1460, 1370,
+    1287, 1215, 1159, 1122, 1105, 1107, 1124, 1147,
+    1168, 1179, 1172, 1143, 1091, 1019, 931, 836,
+    741, 655, 584, 535, 510, 514, 549, 618,
+    721, 856, 1019, 1201, 1388, 1569, 1730, 1862,
+    1956, 2012, 2029, 2013, 1971, 1911, 1844, 1779,
+    1725, 1690, 1676, 1686, 1719, 1771, 1838, 1913,
+    1989, 2059, 2115, 2152, 2167, 2161, 2136, 2097,
+    2048, 1994, 1942, 1894, 1856, 1829, 1813, 1805,
+    1803, 1800, 1788, 1762, 1715, 1643, 1544, 1420,
+    1276, 1120, 962, 811, 675, 558, 463, 390,
+    337, 304, 290, 294, 316, 353, 399, 447,
+    489, 517, 526, 513, 479, 430, 375, 322,
+    283, 264, 269, 297, 345, 405, 473, 542,
+    612, 682, 754, 829, 910, 996, 1086, 1179,
+    1273, 1366, 1459, 1553, 1649, 1747, 1848, 1949,
+    2048, 2141, 2227, 2305, 2375, 2440, 2505, 2574,
+    2649, 2733, 2825, 2923, 3023, 3122, 3215, 3300,
+    3373, 3433, 3476, 3499, 3496, 3465, 3403, 3313,
+    3200, 3073, 2945, 2829, 2735, 2672, 2644, 2652,
+    2691, 2756, 2836, 2921, 3000, 3062, 3101, 3111,
+    3090, 3036, 2950, 2835, 2695, 2539, 2375, 2214,
+    2069, 1947, 1855, 1795, 1766, 1765, 1786, 1824,
+    1871, 1920, 1965, 2003, 2029, 2044, 2050, 2049
+  },
+  {
+    2048, 2061, 2117, 2228, 2396, 2610, 2844, 3065,
+    3240, 3343, 3358, 3283, 3125, 2900, 2629, 2337,
+    2048, 1783, 1558, 1379, 1241, 1136, 1049, 971,
+    900, 843, 815, 838, 930, 1103, 1358, 1680,
+    2048, 2435, 2816, 3170, 3479, 3729, 3908, 4008,
+    4025, 3959, 3819, 3616, 3364, 3076, 2757, 2413,
+    2048, 1667, 1285, 922, 601, 347, 175, 92,
+    93, 168, 304, 490, 722, 998, 1315, 1668,
+    2048, 2437, 2818, 3173, 3483, 3736, 3919, 4021,
+    4035, 3956, 3788, 3544, 3247, 2924, 2605, 2309,
+    2048, 1819, 1614, 1422, 1234, 1050, 878, 733,
+    633, 597, 635, 751, 939, 1186, 1471, 1768,
+    2048, 2280, 2443, 2523, 2523, 2457, 2354, 2241,
+    2146, 2087, 2067, 2081, 2113, 2142, 2149, 2118,
+    2048, 1944, 1824, 1711, 1629, 1601, 1637, 1740,
+    1896, 2080, 2261, 2404, 2481, 2478, 2394, 2243,
+    2048, 1835, 1634, 1468, 1354, 1299, 1300, 1342,
+    1408, 1479, 1540, 1586, 1625, 1670, 1744, 1865,
+    2048, 2292, 2585, 2903, 3215, 3491, 3707, 3846,
+    3899, 3864, 3745, 3550, 3296, 2999, 2682, 2360,
+    2048, 1749, 1462, 1186, 917, 661, 432, 250,
+    137, 112, 184, 351, 600, 912, 1268, 1651,
+    2048, 2444, 2828, 3184, 3496, 3749, 3932, 4040,
+    4072, 4031, 3919, 3739, 3493, 3185, 2828, 2441,
+    2048, 1675, 1346, 1074, 862, 705, 592, 516,
+    476, 475, 524, 632, 806, 1046, 1343, 1684,
+    2048, 2412, 2755, 3051, 3279, 3421, 3468, 3421,
+    3295, 3116, 2914, 2717, 2543, 2398, 2277, 2166,
+    2048, 1909, 1744, 1557, 1361, 1178, 1031, 940,
+    919, 975, 1102, 1284, 1497, 1708, 1886, 2004,
+    2048, 2018, 1931, 1812, 1689, 1590, 1536, 1534,
+    1585, 1676, 1786, 1894, 1981, 2035, 2056, 2053
+  },
+  {
+    2048, 2072, 2162, 2326, 2531, 2717, 2808, 2744,
+    2504, 2112, 1636, 1162, 781, 560, 536, 708,
+    1040, 1468, 1922, 2340, 2681, 2929, 3082, 3144,
+    3108, 2958, 2676, 2261, 1739, 1174, 654, 273,
+    103, 179, 496, 1009, 1653, 2344, 2997, 3529,
+    3874, 3994, 3882, 3563, 3082, 2497, 1866, 1246,
+    698, 284, 64, 82, 347, 829, 1459, 2145,
+    2795, 3334, 3712, 3900, 3885, 3668, 3262, 2702,
+    2048, 1375, 770, 310, 56, 39, 261, 696,
+    1287, 1952, 2594, 3120, 3458, 3578, 3497, 3260,
+    2927, 2549, 2159, 1774, 1409, 1084, 836, 709,
+    741, 951, 1327, 1819, 2353, 2844, 3211, 3395,
+    3374, 3170, 2846, 2488, 2179, 1975, 1891, 1901,
+    1956, 2008, 2027, 2015, 1996, 2006, 2073, 2203,
+    2370, 2529, 2630, 2636, 2539, 2368, 2176, 2032,
+    1989, 2070, 2251, 2471, 2649, 2712, 2622, 2385,
+    2048, 1681, 1362, 1153, 1086, 1157, 1334, 1565,
+    1803, 2019, 2207, 2378, 2545, 2706, 2837, 2892,
+    2819, 2583, 2185, 1674, 1130, 653, 328, 216,
+    337, 675, 1182, 1782, 2392, 2928, 3328, 3557,
+    3606, 3490, 3229, 2845, 2359, 1803, 1223, 690,
+    283, 77, 118, 409, 910, 1551, 2247, 2916,
+    3483, 3886, 4077, 4031, 3750, 3266, 2640, 1948,
+    1273, 689, 261, 35, 43, 291, 753, 1368,
+    2048, 2691, 3210, 3550, 3691, 3645, 3437, 3096,
+    2649, 2126, 1569, 1033, 587, 298, 216, 362,
+    722, 1248, 1866, 2486, 3015, 3375, 3519, 3446,
+    3200, 2855, 2490, 2166, 1911, 1723, 1584, 1478,
+    1404, 1379, 1435, 1593, 1858, 2201, 2566, 2885,
+    3090, 3140, 3027, 2785, 2480, 2196, 2006, 1951,
+    2026, 2183, 2350, 2459, 2469, 2375, 2208, 2022,
+    1871, 1793, 1798, 1865, 1955, 2028, 2061, 2057
+  },
+  {
+    2048, 1736, 1511, 1423, 1476, 1630, 1822, 1987,
+    2083, 2101, 2063, 2006, 1968, 1967, 2000, 2045,
+    2073, 2061, 2011, 1944, 1899, 1908, 1981, 2099,
+    2218, 2291, 2292, 2226, 2129, 2054, 2044, 2111,
+    2237, 2375, 2471, 2480, 2385, 2198, 1962, 1735,
+    1574, 1515, 1563, 1694, 1861, 2022, 2148, 2232,
+    2282, 2305, 2299, 2254, 2154, 1996, 1798, 1599,
+    1449, 1393, 1464, 1664, 1967, 2319, 2651, 2890,
+    2979, 2896, 2660, 2325, 1964, 1648, 1430, 1334,
+    1360, 1494, 1707, 1967, 2238, 2480, 2658, 2740,
+    2709, 2561, 2310, 1987, 1639, 1327, 1114, 1056,
+    1181, 1476, 1889, 2335, 2720, 2967, 3034, 2923,
+    2673, 2345, 2010, 1727, 1537, 1455, 1475, 1580,
+    1747, 1955, 2184, 2411, 2607, 2733, 2751, 2632,
+    2378, 2025, 1643, 1320, 1132, 1123, 1287, 1573,
+    1902, 2192, 2386, 2461, 2433, 2339, 2225, 2123,
+    2048, 1993, 1946, 1898, 1854, 1834, 1865, 1966,
+    2133, 2334, 2512, 2611, 2593, 2463, 2263, 2058,
+    1913, 1862, 1902, 1996, 2088, 2130, 2099, 2001,
+    1871, 1755, 1694, 1710, 1795, 1918, 2036, 2111,
+    2130, 2104, 2062, 2034, 2032, 2044, 2044, 2008,
+    1930, 1832, 1756, 1745, 1830, 2008, 2250, 2502,
+    2700, 2790, 2741, 2556, 2273, 1955, 1672, 1483,
+    1414, 1463, 1600, 1789, 1998, 2202, 2383, 2519,
+    2590, 2574, 2460, 2253, 1979, 1682, 1414, 1233,
+    1183, 1291, 1551, 1925, 2344, 2723, 2981, 3065,
+    2964, 2707, 2356, 1983, 1656, 1424, 1315, 1335,
+    1468, 1686, 1950, 2223, 2467, 2652, 2748, 2736,
+    2601, 2347, 2004, 1624, 1283, 1058, 1009, 1154,
+    1466, 1873, 2285, 2614, 2801, 2826, 2710, 2501,
+    2259, 2036, 1862, 1751, 1697, 1692, 1733, 1822,
+    1963, 2154, 2374, 2582, 2721, 2742, 2619, 2369
+  },
+  {
+    2048, 2099, 2228, 2259, 1999, 1514, 1195, 1450,
+    2280, 3163, 3424, 2780, 1605, 678, 618, 1447,
+    2593, 3312, 3203, 2425, 1510, 990, 1120, 1807,
+    2685, 3258, 3119, 2226, 1045, 353, 712, 2001,
+    3423, 4031, 3396, 1899, 483, 41, 848, 2389,
+    3692, 3949, 3033, 1544, 405, 291, 1255, 2722,
+    3811, 3831, 2719, 1136, 90, 268, 1555, 3114,
+    3964, 3614, 2324, 895, 183, 617, 1954, 3388,
+    4020, 3424, 1949, 514, 27, 798, 2345, 3693,
+    3997, 3089, 1590, 481, 425, 1338, 2538, 3274,
+    3197, 2470, 1563, 978, 1033, 1728, 2698, 3356,
+    3224, 2300, 1137, 500, 836, 1934, 3058, 3478,
+    2986, 2018, 1282, 1194, 1621, 2108, 2314, 2242,
+    2102, 2039, 2030, 2009, 2004, 2101, 2286, 2386,
+    2222, 1832, 1496, 1506, 1876, 2312, 2478, 2313,
+    2077, 2067, 2276, 2385, 2108, 1542, 1143, 1321,
+    2048, 2836, 3127, 2729, 1951, 1338, 1247, 1633,
+    2172, 2537, 2581, 2321, 1874, 1441, 1300, 1669,
+    2465, 3215, 3317, 2530, 1269, 374, 507, 1646,
+    3076, 3872, 3523, 2269, 928, 339, 820, 2008,
+    3150, 3579, 3074, 1933, 812, 393, 1006, 2361,
+    3636, 3973, 3084, 1503, 242, 106, 1176, 2779,
+    3923, 3906, 2735, 1128, 88, 267, 1552, 3134,
+    4033, 3701, 2345, 796, 14, 497, 1947, 3438,
+    4019, 3364, 1958, 721, 380, 1054, 2279, 3324,
+    3589, 2905, 1647, 566, 367, 1237, 2668, 3752,
+    3780, 2721, 1257, 332, 511, 1607, 2838, 3413,
+    3085, 2234, 1489, 1248, 1506, 2001, 2450, 2652,
+    2503, 2030, 1460, 1167, 1432, 2176, 2932, 3161,
+    2674, 1808, 1170, 1163, 1680, 2239, 2430, 2258,
+    2059, 2108, 2334, 2426, 2195, 1777, 1510, 1606,
+    1957, 2266, 2327, 2193, 2057, 2033, 2068, 2069
+  },
+  {
+    2048, 2119, 2229, 2372, 2541, 2724, 2909, 3085,
+    3240, 3368, 3466, 3533, 3571, 3581, 3566, 3529,
+    3473, 3403, 3326, 3251, 3188, 3144, 3128, 3145,
+    3195, 3276, 3382, 3503, 3628, 3747, 3850, 3932,
+    3992, 4032, 4055, 4067, 4071, 4069, 4061, 4047,
+    4025, 3996, 3965, 3934, 3910, 3898, 3902, 3922,
+    3956, 3998, 4040, 4074, 4093, 4093, 4074, 4041,
+    4002, 3964, 3935, 3920, 3921, 3936, 3961, 3991,
+    4020, 4044, 4062, 4073, 4078, 4078, 4073, 4060,
+    4035, 3994, 3932, 3848, 3744, 3626, 3504, 3389,
+    3291, 3220, 3180, 3174, 3198, 3247, 3313, 3388,
+    3462, 3527, 3577, 3607, 3615, 3598, 3553, 3479,
+    3374, 3240, 3081, 2904, 2720, 2541, 2379, 2245,
+    2146, 2087, 2069, 2088, 2140, 2218, 2311, 2410,
+    2503, 2580, 2633, 2654, 2639, 2585, 2492, 2361,
+    2199, 2014, 1817, 1619, 1435, 1273, 1142, 1045,
+    984, 959, 967, 1005, 1067, 1148, 1238, 1328,
+    1408, 1468, 1498, 1493, 1450, 1369, 1254, 1113,
+    956, 796, 643, 508, 397, 311, 251, 214,
+    196, 195, 211, 240, 283, 334, 391, 445,
+    489, 515, 519, 496, 449, 380, 299, 215,
+    137, 74, 31, 7, 0, 3, 10, 16,
+    18, 14, 8, 2, 0, 2, 8, 16,
+    23, 25, 22, 13, 4, 0, 7, 31,
+    76, 139, 215, 296, 371, 432, 472, 486,
+    476, 445, 398, 345, 291, 244, 207, 183,
+    172, 177, 199, 241, 305, 395, 510, 648,
+    800, 958, 1109, 1242, 1347, 1416, 1448, 1443,
+    1404, 1338, 1255, 1164, 1077, 1002, 947, 918,
+    919, 954, 1024, 1129, 1268, 1436, 1624, 1822,
+    2017, 2197, 2351, 2472, 2554, 2597, 2602, 2571,
+    2510, 2427, 2331, 2232, 2141, 2070, 2027, 2018
+  },
+  {
+    2048, 2055, 2083, 2142, 2236, 2366, 2526, 2705,
+    2891, 3068, 3227, 3358, 3455, 3515, 3537, 3522,
+    3473, 3396, 3302, 3199, 3101, 3015, 2946, 2896,
+    2859, 2827, 2789, 2734, 2652, 2541, 2399, 2232,
+    2048, 1853, 1656, 1461, 1273, 1094, 929, 779,
+    649, 541, 454, 384, 327, 277, 229, 182,
+    139, 106, 93, 108, 158, 244, 363, 506,
+    666, 832, 999, 1165, 1330, 1499, 1674, 1857,
+    2048, 2243, 2440, 2635, 2825, 3005, 3173, 3324,
+    3453, 3552, 3614, 3635, 3614, 3558, 3476, 3382,
+    3291, 3215, 3159, 3125, 3110, 3105, 3100, 3084,
+    3048, 2986, 2897, 2783, 2647, 2497, 2341, 2188,
+    2048, 1931, 1846, 1799, 1790, 1815, 1863, 1922,
+    1978, 2017, 2030, 2012, 1962, 1885, 1789, 1687,
+    1592, 1517, 1473, 1467, 1501, 1574, 1678, 1805,
+    1940, 2069, 2176, 2249, 2282, 2272, 2224, 2146,
+    2048, 1941, 1837, 1745, 1672, 1623, 1598, 1591,
+    1596, 1599, 1590, 1558, 1495, 1398, 1269, 1117,
+    956, 802, 670, 575, 523, 516, 554, 630,
+    738, 873, 1027, 1196, 1372, 1550, 1724, 1890,
+    2048, 2198, 2346, 2498, 2659, 2833, 3019, 3210,
+    3398, 3573, 3724, 3847, 3939, 4004, 4046, 4069,
+    4078, 4071, 4048, 4005, 3939, 3852, 3743, 3618,
+    3479, 3331, 3173, 3006, 2830, 2642, 2446, 2245,
+    2048, 1860, 1690, 1539, 1406, 1286, 1172, 1057,
+    936, 808, 676, 546, 425, 322, 242, 192,
+    172, 186, 235, 319, 438, 590, 769, 965,
+    1166, 1356, 1526, 1668, 1779, 1864, 1931, 1988,
+    2048, 2117, 2202, 2304, 2419, 2541, 2659, 2764,
+    2845, 2893, 2899, 2857, 2767, 2633, 2463, 2272,
+    2078, 1899, 1750, 1642, 1579, 1563, 1587, 1643,
+    1721, 1807, 1890, 1961, 2012, 2041, 2052, 2050
+  },
+  {
+    2048, 2060, 2109, 2207, 2360, 2560, 2787, 3015,
+    3217, 3368, 3451, 3458, 3391, 3257, 3067, 2840,
+    2593, 2344, 2110, 1900, 1717, 1554, 1404, 1253,
+    1093, 924, 753, 596, 475, 410, 418, 507,
+    673, 905, 1189, 1509, 1849, 2196, 2537, 2858,
+    3146, 3391, 3587, 3732, 3830, 3884, 3899, 3876,
+    3811, 3695, 3524, 3294, 3012, 2689, 2345, 1999,
+    1666, 1358, 1077, 824, 599, 404, 246, 133,
+    75, 80, 151, 285, 478, 721, 1006, 1323,
+    1660, 2000, 2324, 2612, 2847, 3019, 3127, 3181,
+    3197, 3192, 3179, 3165, 3148, 3119, 3064, 2972,
+    2833, 2647, 2419, 2162, 1894, 1634, 1404, 1223,
+    1109, 1072, 1113, 1222, 1379, 1556, 1726, 1867,
+    1965, 2019, 2035, 2029, 2021, 2027, 2060, 2127,
+    2222, 2333, 2441, 2526, 2569, 2558, 2487, 2361,
+    2197, 2016, 1849, 1723, 1659, 1666, 1742, 1876,
+    2048, 2234, 2412, 2562, 2670, 2729, 2742, 2718,
+    2674, 2627, 2591, 2574, 2575, 2583, 2581, 2548,
+    2465, 2322, 2116, 1859, 1568, 1267, 977, 719,
+    508, 354, 266, 245, 291, 396, 550, 737,
+    945, 1165, 1394, 1634, 1891, 2170, 2472, 2790,
+    3109, 3408, 3667, 3870, 4007, 4077, 4082, 4030,
+    3923, 3765, 3559, 3306, 3013, 2689, 2347, 1998,
+    1653, 1320, 1006, 719, 468, 266, 126, 61,
+    76, 167, 322, 524, 752, 993, 1237, 1486,
+    1741, 2008, 2289, 2582, 2875, 3157, 3411, 3623,
+    3780, 3872, 3893, 3841, 3715, 3523, 3282, 3013,
+    2740, 2489, 2276, 2107, 1979, 1879, 1791, 1699,
+    1592, 1467, 1331, 1196, 1082, 1005, 980, 1015,
+    1109, 1256, 1438, 1635, 1821, 1973, 2068, 2097,
+    2059, 1967, 1844, 1713, 1601, 1526, 1499, 1525,
+    1594, 1694, 1805, 1908, 1988, 2036, 2055, 2053
+  },
+  {
+    2048, 2072, 2095, 2075, 2062, 2149, 2347, 2534,
+    2584, 2527, 2537, 2732, 3017, 3166, 3074, 2884,
+    2844, 3021, 3223, 3212, 2982, 2782, 2838, 3104,
+    3321, 3317, 3206, 3252, 3548, 3896, 4028, 3910,
+    3782, 3875, 4095, 4095, 4095, 3855, 3719, 3863,
+    4080, 4065, 3759, 3424, 3355, 3556, 3739, 3649,
+    3342, 3105, 3136, 3332, 3412, 3231, 2919, 2715,
+    2707, 2768, 2724, 2551, 2362, 2259, 2219, 2157,
+    2048, 1944, 1881, 1811, 1665, 1473, 1350, 1361,
+    1417, 1359, 1150, 949, 947, 1145, 1329, 1300,
+    1095, 955, 1044, 1254, 1316, 1103, 782, 627,
+    713, 835, 759, 498, 306, 386, 653, 834,
+    792, 690, 804, 1192, 1608, 1771, 1678, 1603,
+    1778, 2118, 2309, 2159, 1822, 1629, 1734, 1954,
+    1990, 1762, 1493, 1456, 1681, 1943, 2022, 1925,
+    1847, 1930, 2119, 2249, 2238, 2153, 2095, 2080,
+    2048, 1973, 1912, 1915, 1938, 1892, 1763, 1668,
+    1723, 1885, 1968, 1842, 1593, 1438, 1481, 1578,
+    1487, 1150, 775, 614, 689, 765, 627, 325,
+    123, 191, 407, 501, 366, 185, 212, 466,
+    698, 671, 436, 273, 366, 584, 630, 389,
+    77, 8, 248, 539, 586, 384, 215, 329,
+    667, 935, 929, 753, 682, 863, 1169, 1364,
+    1361, 1292, 1331, 1505, 1700, 1812, 1863, 1934,
+    2048, 2147, 2196, 2244, 2360, 2521, 2615, 2582,
+    2519, 2589, 2834, 3096, 3182, 3084, 3009, 3147,
+    3446, 3657, 3604, 3387, 3271, 3380, 3552, 3521,
+    3228, 2893, 2770, 2865, 2939, 2800, 2540, 2436,
+    2621, 2923, 3052, 2930, 2780, 2860, 3153, 3370,
+    3268, 2930, 2671, 2689, 2844, 2820, 2484, 2039,
+    1804, 1875, 2038, 2026, 1804, 1593, 1602, 1812,
+    2013, 2049, 1961, 1906, 1958, 2053, 2091, 2066
+  },
+  {
+    2048, 2070, 2146, 2287, 2483, 2702, 2900, 3027,
+    3040, 2918, 2664, 2307, 1895, 1485, 1132, 876,
+    736, 714, 794, 950, 1160, 1403, 1672, 1964,
+    2279, 2614, 2955, 3279, 3551, 3731, 3784, 3687,
+    3434, 3043, 2547, 1997, 1446, 948, 545, 265,
+    123, 122, 252, 500, 850, 1280, 1768, 2284,
+    2795, 3265, 3654, 3930, 4065, 4046, 3875, 3567,
+    3152, 2664, 2143, 1626, 1146, 731, 405, 187,
+    94, 136, 319, 637, 1073, 1592, 2150, 2693,
+    3169, 3530, 3746, 3807, 3720, 3514, 3223, 2886,
+    2537, 2196, 1875, 1578, 1306, 1063, 862, 723,
+    671, 729, 908, 1201, 1584, 2009, 2421, 2763,
+    2992, 3084, 3043, 2896, 2687, 2466, 2275, 2142,
+    2070, 2044, 2037, 2021, 1974, 1892, 1789, 1690,
+    1628, 1627, 1697, 1828, 1989, 2140, 2238, 2252,
+    2173, 2016, 1819, 1633, 1508, 1484, 1577, 1776,
+    2048, 2343, 2610, 2807, 2911, 2919, 2849, 2726,
+    2581, 2434, 2291, 2147, 1986, 1794, 1565, 1306,
+    1043, 816, 670, 645, 766, 1034, 1430, 1909,
+    2417, 2895, 3293, 3576, 3726, 3744, 3643, 3442,
+    3162, 2819, 2430, 2008, 1570, 1139, 742, 413,
+    189, 97, 158, 374, 732, 1201, 1741, 2303,
+    2842, 3316, 3692, 3947, 4067, 4047, 3887, 3596,
+    3191, 2697, 2150, 1590, 1066, 621, 297, 117,
+    94, 220, 475, 826, 1240, 1683, 2127, 2551,
+    2937, 3270, 3535, 3711, 3780, 3723, 3531, 3209,
+    2779, 2282, 1770, 1302, 930, 693, 608, 664,
+    834, 1076, 1345, 1606, 1836, 2031, 2199, 2355,
+    2509, 2665, 2811, 2922, 2971, 2931, 2792, 2562,
+    2271, 1966, 1698, 1514, 1444, 1491, 1632, 1826,
+    2020, 2164, 2228, 2200, 2097, 1953, 1809, 1705,
+    1663, 1689, 1767, 1869, 1964, 2029, 2055, 2053
+  },
+  {
+    2048, 2561, 2882, 1925, 1133, 2097, 3797, 4088,
+    2776, 1767, 2291, 3280, 3257, 2487, 2059, 2126,
+    2101, 1630, 1064, 1182, 1941, 2104, 1196, 546,
+    1140, 2073, 2181, 1769, 1821, 2365, 2600, 2511,
+    2925, 3644, 3507, 2704, 2607, 3268, 3505, 3065,
+    2629, 2418, 2195, 2003, 2003, 1859, 1066, 110,
+    157, 1030, 1220, 450, 80, 694, 1448, 1721,
+    1786, 2100, 2633, 2799, 2270, 1758, 2203, 3394,
+    4094, 3495, 2357, 2200, 3036, 3279, 2512, 2047,
+    2132, 1482, 103, 0, 966, 2027, 1434, 250,
+    475, 1883, 2525, 1973, 1589, 1913, 2175, 1995,
+    1842, 2221, 3014, 3437, 3043, 2581, 2900, 3549,
+    3502, 2694, 2013, 1982, 2001, 1505, 1262, 2009,
+    2685, 2173, 1503, 2031, 3013, 2982, 2080, 1531,
+    1740, 2035, 2040, 2150, 2357, 2095, 1711, 2170,
+    3093, 3197, 2417, 1724, 1547, 1653, 1797, 1905,
+    2048, 2242, 2334, 2300, 2332, 2628, 3225, 3649,
+    3156, 2071, 1676, 2141, 2380, 2129, 2035, 2014,
+    1542, 1048, 1384, 2197, 2109, 877, 120, 825,
+    1656, 1357, 856, 1254, 1923, 2056, 2093, 2657,
+    3405, 3542, 2994, 2621, 2942, 3334, 3120, 2552,
+    2206, 2220, 2250, 1874, 1385, 1543, 1973, 1423,
+    198, 29, 1125, 1695, 806, 0, 263, 1560,
+    2130, 2050, 2522, 3231, 2971, 2280, 2656, 3851,
+    4095, 3374, 2153, 1810, 2357, 2798, 2562, 2088,
+    1879, 1846, 1581, 940, 509, 921, 1484, 1011,
+    31, 79, 1132, 1898, 1978, 1988, 2205, 2327,
+    2334, 2625, 3035, 2727, 1825, 1636, 2371, 2727,
+    2323, 2121, 2341, 2265, 1886, 1866, 2171, 1986,
+    1120, 626, 1239, 2015, 1854, 1326, 1485, 2132,
+    2467, 2287, 2008, 2142, 2522, 2233, 1167, 733,
+    1793, 3076, 2860, 1469, 909, 1947, 2928, 2560
+  },
+  {
+    2048, 2504, 2795, 1937, 1211, 2093, 3713, 4049,
+    2790, 1746, 2327, 3617, 3862, 2964, 2133, 1958,
+    2048, 1906, 1540, 1495, 1969, 2095, 1253, 469,
+    957, 2084, 2288, 1309, 413, 609, 1420, 1878,
+    2048, 2416, 2641, 2415, 2445, 3116, 3618, 3425,
+    3094, 3057, 2976, 2556, 2157, 2260, 2607, 2510,
+    2048, 1846, 1730, 1126, 470, 562, 1118, 1256,
+    707, 0, 0, 657, 1800, 2252, 1982, 1778,
+    2048, 2337, 2178, 2155, 3149, 4095, 3814, 2019,
+    1613, 3417, 4095, 4095, 2914, 2060, 2283, 2403,
+    2048, 2008, 2319, 1963, 931, 522, 1245, 2190,
+    2418, 1813, 1007, 831, 1340, 1749, 1701, 1701,
+    2048, 2283, 2008, 1749, 2382, 3485, 3459, 2102,
+    1281, 1916, 2557, 2061, 1334, 1451, 2031, 2222,
+    2048, 2033, 2105, 1834, 1584, 1987, 2435, 1916,
+    981, 920, 1695, 2348, 2505, 2404, 2271, 2175,
+    2048, 1874, 1791, 1820, 1787, 1507, 926, 477,
+    918, 2022, 2475, 1928, 1548, 1878, 2145, 2009,
+    2048, 2386, 2390, 1952, 2002, 3023, 3848, 3333,
+    2518, 3030, 4095, 4095, 2947, 2084, 2100, 2270,
+    2048, 1702, 1663, 1726, 1412, 921, 893, 1364,
+    1762, 1577, 771, 85, 433, 1479, 2005, 1899,
+    2048, 2447, 2401, 2251, 3043, 4095, 4095, 3226,
+    1627, 2142, 3851, 4095, 3076, 2212, 2305, 2408,
+    2048, 1782, 2003, 2215, 1703, 660, 90, 449,
+    1182, 1559, 1324, 832, 814, 1398, 1831, 1842,
+    2048, 2517, 2569, 2216, 2218, 2717, 3036, 2810,
+    2563, 2830, 3111, 2643, 1890, 1817, 2179, 2205,
+    2048, 2021, 1715, 1061, 879, 1567, 2270, 1959,
+    932, 554, 1292, 2021, 1905, 1587, 1757, 2076,
+    2048, 1774, 1737, 2244, 2760, 2283, 1035, 637,
+    1788, 3057, 2821, 1509, 1006, 1957, 2836, 2504
+  },
+  {
+    2048, 2448, 2705, 1949, 1297, 2089, 3594, 3952,
+    2776, 1740, 2347, 3840, 4095, 3348, 2198, 1801,
+    1994, 2206, 2113, 1926, 2015, 2073, 1535, 882,
+    1140, 2082, 2300, 1162, 0, 0, 565, 1339,
+    1170, 960, 1385, 1871, 1992, 2142, 2460, 2617,
+    2629, 2757, 2854, 2594, 2196, 2427, 3507, 4095,
+    3938, 2920, 2662, 3067, 3099, 2608, 2195, 2028,
+    1786, 1282, 808, 955, 1777, 2367, 1886, 688,
+    1, 586, 1725, 1880, 843, 258, 1065, 2058,
+    2132, 2013, 2527, 3003, 2625, 2061, 2503, 3589,
+    3621, 2244, 1338, 2198, 3558, 3686, 2746, 1947,
+    1842, 2145, 2321, 2155, 1950, 1904, 1660, 1024,
+    593, 1060, 2140, 2565, 1577, 323, 565, 1997,
+    2685, 2145, 1719, 2040, 2341, 2179, 2045, 2244,
+    2355, 2087, 1946, 2350, 2626, 2116, 1633, 2182,
+    3093, 3120, 2374, 1774, 1637, 1732, 1850, 1936,
+    2048, 2199, 2274, 2250, 2281, 2539, 3089, 3542,
+    3156, 2073, 1590, 2184, 2670, 2289, 1876, 2152,
+    2553, 2428, 2091, 2069, 2066, 1520, 887, 1098,
+    1656, 1132, 0, 0, 782, 1984, 1924, 1117,
+    690, 1029, 1618, 1893, 1959, 2147, 2351, 2330,
+    2206, 2379, 3157, 4095, 4095, 3062, 2159, 2793,
+    3897, 3778, 2732, 2273, 2711, 2971, 2487, 2018,
+    2130, 2013, 1044, 328, 923, 1791, 1414, 226,
+    0, 708, 1938, 2310, 1670, 958, 958, 1461,
+    1879, 2035, 2162, 2506, 2870, 2767, 2466, 2936,
+    4064, 4095, 3409, 2348, 2278, 2767, 2907, 2584,
+    2334, 2371, 2327, 2100, 2069, 2158, 1901, 1584,
+    1772, 1935, 1261, 335, 403, 1472, 2281, 1965,
+    1120, 944, 1561, 2033, 1989, 1946, 2085, 2015,
+    1628, 1297, 1503, 2326, 2936, 2317, 964, 610,
+    1793, 3007, 2766, 1557, 1113, 1967, 2741, 2447
+  },
+  {
+    2048, 2391, 2614, 1962, 1390, 2084, 3441, 3798,
+    2733, 1749, 2349, 3933, 4095, 3601, 2245, 1678,
+    1949, 2480, 2673, 2383, 2069, 2045, 1963, 1657,
+    1630, 2067, 2213, 1389, 126, 0, 478, 1190,
+    807, 179, 564, 1450, 1580, 1095, 969, 1325,
+    1647, 1798, 1949, 2078, 2078, 2176, 2736, 3459,
+    3495, 2877, 2778, 3608, 4095, 3832, 3049, 2830,
+    3286, 3873, 3912, 3170, 2242, 1891, 2097, 2250,
+    2048, 1830, 1948, 1965, 1182, 208, 570, 2072,
+    2449, 693, 0, 0, 845, 2027, 1506, 582,
+    844, 1928, 2383, 1996, 1740, 1958, 2133, 2012,
+    1906, 2171, 2762, 3132, 2879, 2533, 2914, 3805,
+    4095, 3243, 1950, 1562, 2441, 3329, 3017, 2076,
+    1754, 2015, 2102, 2047, 2244, 2409, 2068, 1514,
+    1479, 1988, 2180, 1686, 1404, 1975, 2465, 1917,
+    1062, 1061, 1753, 2291, 2407, 2322, 2217, 2143,
+    2048, 1917, 1853, 1872, 1843, 1611, 1109, 674,
+    1004, 2023, 2508, 1904, 1355, 1759, 2273, 1890,
+    1114, 1014, 1626, 2105, 2060, 1990, 2239, 2366,
+    2228, 2562, 3518, 3922, 3105, 2107, 2178, 3174,
+    3968, 3797, 3010, 2570, 2795, 3051, 2841, 2406,
+    2157, 2164, 2183, 1932, 1602, 1703, 1995, 1593,
+    632, 402, 1233, 1703, 667, 0, 0, 882,
+    2436, 1965, 539, 279, 1239, 1921, 1852, 1776,
+    2048, 2247, 2081, 1919, 2319, 3168, 3686, 3445,
+    2847, 2530, 2827, 3508, 3758, 3148, 2545, 2893,
+    3591, 3482, 2690, 2150, 2095, 2087, 1943, 1859,
+    1850, 1637, 1317, 1517, 2233, 2422, 1719, 1252,
+    1659, 1911, 1215, 442, 674, 1620, 2200, 2001,
+    1621, 1677, 1967, 2049, 2087, 2327, 2405, 1960,
+    1272, 921, 1332, 2380, 3036, 2331, 957, 652,
+    1807, 2930, 2695, 1612, 1229, 1978, 2645, 2391
+  },
+  {
+    2048, 2334, 2522, 1976, 1490, 2079, 3258, 3593,
+    2665, 1773, 2333, 3889, 4095, 3697, 2269, 1604,
+    1919, 2679, 3113, 2768, 2118, 2017, 2415, 2552,
+    2260, 2045, 2060, 1896, 1377, 998, 1204, 1514,
+    1170, 558, 718, 1443, 1509, 781, 350, 647,
+    1021, 1071, 1139, 1531, 1928, 1784, 1177, 880,
+    1264, 1772, 1926, 2007, 2266, 2439, 2386, 2410,
+    2792, 3438, 3834, 3414, 2357, 1705, 2214, 3417,
+    4094, 3520, 2379, 2228, 3421, 4095, 3464, 2029,
+    1806, 2675, 3147, 2715, 2168, 2047, 1957, 1561,
+    1396, 1948, 2471, 1943, 827, 498, 1262, 2186,
+    2411, 1809, 922, 606, 1091, 1557, 1271, 647,
+    593, 1304, 2100, 2265, 1910, 1752, 1973, 2052,
+    1898, 2005, 2283, 2056, 1407, 1270, 2012, 2828,
+    2791, 2119, 1898, 2432, 2701, 2118, 1653, 2168,
+    2934, 2918, 2303, 1839, 1742, 1817, 1905, 1968,
+    2048, 2156, 2211, 2195, 2221, 2422, 2863, 3260,
+    2987, 2070, 1612, 2188, 2750, 2353, 1795, 2236,
+    3268, 3558, 2766, 1923, 2007, 2675, 2881, 2459,
+    2139, 2121, 1934, 1615, 1678, 2021, 1977, 1347,
+    690, 653, 1185, 1519, 1188, 713, 799, 1352,
+    1768, 1592, 799, 53, 282, 1342, 1981, 1671,
+    1281, 1501, 1912, 2039, 2186, 2693, 3057, 2588,
+    1814, 2110, 3494, 4095, 3331, 2323, 2700, 3882,
+    4095, 3396, 2161, 1766, 2478, 3411, 3618, 3112,
+    2529, 2271, 2311, 2368, 2218, 2019, 1965, 1767,
+    1212, 861, 1236, 1839, 1861, 1367, 1080, 1309,
+    1542, 1252, 897, 1342, 2261, 2426, 1753, 1413,
+    1772, 1963, 1600, 1328, 1568, 1949, 2059, 2054,
+    2265, 2525, 2397, 2065, 2176, 2648, 2657, 1920,
+    1034, 696, 1245, 2400, 3050, 2324, 1016, 763,
+    1831, 2827, 2610, 1674, 1353, 1989, 2548, 2334
+  },
+  {
+    2048, 2277, 2428, 1990, 1595, 2073, 3049, 3342,
+    2572, 1810, 2299, 3712, 4095, 3626, 2267, 1589,
+    1909, 2769, 3349, 2999, 2150, 1997, 2763, 3291,
+    2819, 2024, 1903, 2466, 2932, 2799, 2368, 2132,
+    2048, 1862, 1745, 1856, 1832, 1442, 1103, 1156,
+    1308, 1252, 1212, 1508, 1905, 1682, 615, 0,
+    1, 1020, 1235, 461, 0, 472, 1211, 1424,
+    1100, 697, 708, 1259, 1913, 2154, 2014, 1912,
+    2048, 2193, 2114, 2104, 2644, 3339, 3110, 2029,
+    1740, 3127, 4095, 4095, 3180, 2068, 2650, 3863,
+    3750, 2248, 1351, 2193, 3506, 3666, 2770, 1935,
+    1786, 2199, 2674, 2737, 2430, 2203, 2224, 2222,
+    2048, 1929, 2068, 2203, 1867, 1232, 1199, 2013,
+    2590, 2151, 1589, 2033, 2980, 3075, 2091, 1155,
+    1243, 1973, 2195, 1680, 1441, 1984, 2396, 1944,
+    1293, 1318, 1836, 2218, 2295, 2234, 2162, 2111,
+    2048, 1960, 1917, 1928, 1907, 1741, 1373, 1032,
+    1249, 2028, 2432, 1921, 1395, 1755, 2298, 1853,
+    727, 320, 1170, 2212, 2107, 1013, 427, 1035,
+    1715, 1412, 760, 855, 1561, 2029, 2021, 1936,
+    2048, 2221, 2244, 2215, 2391, 2686, 2742, 2490,
+    2249, 2419, 3196, 4095, 4095, 3026, 2157, 2808,
+    4050, 4086, 2953, 2398, 3348, 4095, 4095, 2977,
+    1750, 2109, 3132, 3289, 2604, 2133, 2179, 2229,
+    2048, 1914, 2025, 2135, 1861, 1261, 870, 1014,
+    1435, 1663, 1397, 758, 436, 929, 1494, 1001,
+    0, 0, 711, 1758, 1825, 1337, 1158, 1447,
+    1683, 1541, 1408, 1710, 2133, 2168, 1981, 1969,
+    2048, 2061, 2217, 2563, 2680, 2320, 1914, 2105,
+    2836, 3225, 2727, 2076, 2234, 2841, 2792, 1901,
+    951, 652, 1252, 2385, 2978, 2298, 1136, 936,
+    1864, 2700, 2513, 1742, 1484, 2000, 2449, 2277
+  },
+  {
+    2048, 2220, 2334, 2004, 1704, 2067, 2818, 3053,
+    2460, 1858, 2251, 3414, 4031, 3396, 2240, 1636,
+    1919, 2736, 3335, 3028, 2158, 1991, 2907, 3645,
+    3117, 2011, 1802, 2860, 4086, 4095, 3365, 2704,
+    2925, 3282, 2971, 2401, 2313, 2568, 2620, 2422,
+    2252, 2173, 2097, 2033, 2032, 1982, 1693, 1304,
+    1264, 1583, 1622, 1093, 632, 815, 1302, 1412,
+    933, 196, 0, 488, 1712, 2406, 1877, 671,
+    1, 568, 1709, 1859, 557, 0, 319, 2073,
+    2409, 947, 0, 0, 1270, 2035, 1732, 1227,
+    1396, 1984, 2220, 2022, 1893, 2003, 2090, 2030,
+    1975, 2111, 2427, 2640, 2519, 2335, 2587, 3208,
+    3502, 2962, 1965, 1594, 2464, 3628, 3486, 2101,
+    1295, 1914, 2598, 2064, 1043, 989, 2005, 2899,
+    2791, 2114, 1918, 2362, 2555, 2100, 1766, 2130,
+    2640, 2614, 2210, 1917, 1860, 1907, 1962, 2000,
+    2048, 2113, 2146, 2137, 2154, 2281, 2567, 2837,
+    2675, 2063, 1737, 2152, 2593, 2298, 1828, 2222,
+    3268, 3696, 2916, 1879, 1984, 3221, 3994, 3348,
+    2509, 3013, 4095, 4095, 3169, 2103, 2157, 2910,
+    3405, 3203, 2647, 2357, 2471, 2597, 2469, 2233,
+    2103, 2106, 2115, 1990, 1824, 1873, 2020, 1808,
+    1281, 1126, 1573, 1837, 1154, 17, 0, 1100,
+    2397, 1964, 283, 0, 655, 1759, 1382, 204,
+    0, 692, 1932, 2342, 1581, 491, 132, 630,
+    1328, 1655, 1467, 1039, 941, 1374, 1757, 1575,
+    1212, 1292, 1716, 1996, 2024, 2028, 2100, 2143,
+    2148, 2260, 2435, 2338, 1942, 1826, 2252, 2573,
+    2323, 2152, 2746, 3548, 3505, 2575, 1821, 2134,
+    3142, 3559, 2864, 2080, 2248, 2864, 2784, 1908,
+    1034, 795, 1352, 2336, 2826, 2253, 1312, 1163,
+    1903, 2555, 2406, 1814, 1620, 2012, 2350, 2220
+  },
+  {
+    2048, 2162, 2239, 2018, 1817, 2061, 2571, 2735,
+    2332, 1916, 2190, 3018, 3473, 3030, 2190, 1738,
+    1949, 2585, 3073, 2846, 2140, 1999, 2806, 3502,
+    3055, 2012, 1798, 2909, 4095, 4095, 3680, 2913,
+    3288, 3935, 3590, 2702, 2599, 3294, 3674, 3370,
+    3014, 2978, 2933, 2572, 2176, 2355, 3177, 3803,
+    3495, 2741, 2573, 3035, 3287, 2966, 2522, 2392,
+    2561, 2764, 2748, 2454, 2116, 1994, 2064, 2115,
+    2048, 1975, 2014, 2019, 1744, 1382, 1493, 2057,
+    2214, 1451, 509, 482, 1366, 2035, 1658, 822,
+    844, 1898, 2597, 1926, 735, 474, 1281, 2179,
+    2390, 1822, 969, 628, 1067, 1516, 1146, 273,
+    0, 841, 2149, 2578, 1584, 370, 585, 1996,
+    2756, 2169, 1562, 2033, 2887, 2910, 2081, 1383,
+    1479, 1997, 2143, 1819, 1683, 2010, 2245, 1990,
+    1639, 1660, 1937, 2135, 2174, 2142, 2105, 2080,
+    2048, 2004, 1982, 1987, 1976, 1890, 1695, 1508,
+    1615, 2037, 2265, 1974, 1655, 1865, 2210, 1916,
+    1114, 762, 1356, 2185, 2101, 1041, 329, 863,
+    1613, 1105, 0, 0, 800, 1983, 1912, 910,
+    127, 281, 1047, 1476, 1166, 733, 851, 1391,
+    1784, 1613, 829, 23, 149, 1226, 1961, 1482,
+    632, 672, 1462, 1829, 1265, 533, 635, 1534,
+    2209, 2015, 1481, 1408, 1764, 2004, 1982, 1957,
+    2048, 2114, 2059, 2003, 2143, 2453, 2663, 2596,
+    2379, 2260, 2417, 2799, 3016, 2744, 2406, 2754,
+    3591, 3831, 3101, 2291, 2248, 2738, 2991, 2750,
+    2524, 2799, 3150, 2742, 1829, 1638, 2389, 2851,
+    2436, 2185, 2913, 3805, 3668, 2608, 1817, 2132,
+    3078, 3425, 2768, 2075, 2215, 2713, 2634, 1939,
+    1272, 1106, 1533, 2258, 2607, 2193, 1531, 1433,
+    1948, 2394, 2291, 1890, 1760, 2024, 2249, 2162
+  },
+  {
+    2048, 2105, 2143, 2033, 1932, 2054, 2312, 2396,
+    2192, 1980, 2121, 2551, 2793, 2565, 2123, 1882,
+    1994, 2341, 2615, 2495, 2100, 2020, 2490, 2908,
+    2654, 2026, 1892, 2594, 3514, 3739, 3149, 2645,
+    2925, 3416, 3196, 2548, 2482, 3061, 3413, 3196,
+    2917, 2917, 2909, 2579, 2184, 2389, 3368, 4095,
+    3938, 3011, 2828, 3622, 4095, 3770, 3023, 2835,
+    3362, 4095, 4095, 3707, 2396, 1681, 2219, 3427,
+    4094, 3530, 2389, 2240, 3598, 4095, 3939, 2019,
+    1621, 3410, 4095, 4095, 3221, 2068, 2626, 3750,
+    3621, 2232, 1405, 2183, 3439, 3644, 2793, 1924,
+    1740, 2243, 2953, 3201, 2820, 2454, 2719, 3335,
+    3502, 2881, 1979, 1697, 2347, 3111, 2958, 2079,
+    1621, 1976, 2331, 2056, 1572, 1565, 2029, 2411,
+    2355, 2074, 1997, 2168, 2238, 2067, 1946, 2077,
+    2256, 2244, 2103, 2003, 1984, 2000, 2019, 2032,
+    2048, 2069, 2080, 2078, 2084, 2127, 2226, 2321,
+    2268, 2053, 1935, 2086, 2252, 2144, 1961, 2118,
+    2553, 2751, 2430, 1970, 2017, 2626, 3049, 2749,
+    2309, 2624, 3428, 3604, 2854, 2090, 2139, 2833,
+    3405, 3329, 2793, 2485, 2742, 3116, 3052, 2617,
+    2285, 2453, 3232, 4095, 4062, 2961, 2148, 2746,
+    3897, 3959, 2917, 2395, 3395, 4095, 4095, 3220,
+    1635, 2142, 3978, 4095, 3496, 2342, 2719, 3896,
+    4095, 3406, 2164, 1747, 2533, 3703, 4095, 3653,
+    2897, 2533, 2807, 3457, 3716, 3158, 2579, 3029,
+    4064, 4095, 3279, 2318, 2260, 2748, 2965, 2704,
+    2476, 2700, 2973, 2612, 1875, 1734, 2302, 2630,
+    2323, 2143, 2632, 3208, 3096, 2403, 1904, 2099,
+    2667, 2862, 2468, 2063, 2143, 2420, 2372, 1988,
+    1628, 1543, 1774, 2158, 2340, 2123, 1781, 1732,
+    1997, 2223, 2170, 1968, 1903, 2036, 2149, 2105
+  },
+  {
+    2048, 2081, 2108, 2062, 2033, 2108, 2213, 2231,
+    2171, 2169, 2313, 2495, 2523, 2399, 2282, 2198,
+    2086, 2082, 2304, 2509, 2430, 2273, 2364, 2557,
+    2495, 2238, 2211, 2647, 3262, 3494, 3182, 2884,
+    3081, 3340, 3015, 2465, 2546, 3166, 3465, 3191,
+    2875, 2836, 2831, 2605, 2347, 2539, 3295, 3937,
+    3765, 3197, 3214, 3747, 3836, 3319, 3028, 3351,
+    3799, 3942, 3782, 3381, 2828, 2390, 2345, 2780,
+    3431, 3666, 3188, 2747, 3186, 3917, 3676, 2669,
+    2404, 3379, 4095, 4095, 3542, 2912, 2971, 3195,
+    2856, 2177, 2097, 2766, 3226, 2929, 2452, 2338,
+    2369, 2329, 2435, 2739, 2953, 2972, 2976, 3055,
+    3070, 2820, 2318, 1989, 2255, 2794, 2819, 2258,
+    1859, 1983, 2135, 1924, 1650, 1723, 2062, 2302,
+    2263, 2109, 2092, 2194, 2176, 2011, 1965, 2133,
+    2271, 2208, 2073, 2013, 2010, 2007, 2008, 2025,
+    2048, 2062, 2073, 2093, 2113, 2126, 2178, 2283,
+    2302, 2132, 1953, 2000, 2163, 2178, 2096, 2181,
+    2443, 2593, 2437, 2158, 2152, 2515, 2813, 2693,
+    2533, 2857, 3355, 3288, 2694, 2318, 2490, 2851,
+    3034, 3022, 2962, 2951, 2919, 2748, 2575, 2643,
+    2816, 2840, 2969, 3484, 3859, 3453, 2747, 2699,
+    3236, 3489, 3234, 3128, 3642, 4095, 4095, 3247,
+    2351, 2675, 3676, 3893, 3199, 2870, 3422, 3924,
+    3615, 2867, 2387, 2435, 2850, 3295, 3533, 3569,
+    3399, 2991, 2695, 2959, 3443, 3394, 2993, 3131,
+    3787, 3963, 3300, 2558, 2412, 2676, 2811, 2651,
+    2532, 2756, 2984, 2622, 1895, 1703, 2209, 2582,
+    2419, 2303, 2653, 3027, 2911, 2454, 2158, 2257,
+    2522, 2573, 2384, 2295, 2416, 2406, 2088, 1777,
+    1737, 1830, 1894, 1984, 2097, 2096, 1974, 1898,
+    1956, 2060, 2088, 2032, 2001, 2056, 2110, 2082
+  },
+  {
+    2048, 1781, 1533, 1328, 1188, 1124, 1143, 1240,
+    1403, 1614, 1851, 2091, 2309, 2484, 2597, 2633,
+    2583, 2447, 2234, 1964, 1663, 1365, 1105, 912,
+    811, 812, 918, 1116, 1384, 1696, 2022, 2334,
+    2610, 2832, 2990, 3078, 3096, 3046, 2937, 2779,
+    2588, 2381, 2175, 1988, 1831, 1709, 1621, 1557,
+    1503, 1443, 1361, 1248, 1094, 899, 665, 395,
+    95, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 166, 384, 583, 766,
+    938, 1107, 1283, 1476, 1697, 1953, 2250, 2587,
+    2956, 3344, 3735, 4095, 4095, 4095, 4095, 4095,
+    4095, 4095, 4095, 4095, 4095, 4095, 4095, 4095,
+    4095, 4095, 4095, 4095, 4095, 4095, 4095, 4095,
+    4095, 4095, 4095, 4095, 4095, 4095, 4095, 4095,
+    4095, 3719, 3312, 2947, 2640, 2399, 2226, 2113,
+    2048, 2012, 1986, 1950, 1884, 1773, 1608, 1389,
+    1126, 836, 546, 284, 83, 0, 0, 59,
+    274, 587, 976, 1413, 1868, 2312, 2719, 3070,
+    3346, 3538, 3638, 3645, 3564, 3409, 3198, 2956,
+    2709, 2483, 2299, 2168, 2094, 2069, 2080, 2107,
+    2131, 2132, 2096, 2015, 1884, 1704, 1477, 1212,
+    917, 605, 291, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    195, 562, 935, 1298, 1639, 1951, 2228, 2469,
+    2677, 2855, 3015, 3168, 3329, 3511, 3729, 3991,
+    4095, 4095, 4095, 4095, 4095, 4095, 4095, 4095,
+    4095, 4095, 4095, 4095, 4095, 4095, 4095, 4095,
+    4095, 4095, 3769, 3464, 3233, 3077, 2987, 2951,
+    2950, 2961, 2963, 2934, 2858, 2727, 2540, 2308
+  },
+  {
+    2048, 1952, 1949, 1768, 1386, 1123, 1378, 2211,
+    3175, 3594, 3098, 1985, 1073, 1108, 2177, 3602,
+    4095, 4052, 2791, 1493, 964, 1374, 2192, 2654,
+    2372, 1590, 934, 876, 1388, 2030, 2357, 2278,
+    2048, 1963, 2047, 2045, 1726, 1193, 892, 1244,
+    2221, 3244, 3550, 2777, 1292, 0, 0, 118,
+    983, 1287, 636, 0, 0, 0, 0, 779,
+    1546, 1488, 916, 452, 518, 1050, 1650, 1981,
+    2048, 2115, 2382, 2741, 2875, 2608, 2181, 2155,
+    2966, 4095, 4095, 4095, 4095, 4095, 4095, 4095,
+    4095, 4095, 4095, 4095, 3621, 2562, 2500, 3327,
+    4095, 4095, 4095, 3627, 2872, 2516, 2453, 2357,
+    2048, 1668, 1511, 1672, 1890, 1743, 1060, 167,
+    0, 121, 1263, 2408, 2778, 2135, 981, 181,
+    286, 1100, 1823, 1683, 543, 0, 0, 0,
+    0, 565, 1406, 1588, 1422, 1356, 1574, 1898,
+    2048, 1971, 1925, 2214, 2846, 3444, 3531, 2971,
+    2159, 1763, 2181, 3173, 3984, 3916, 2897, 1582,
+    883, 1282, 2447, 3481, 3584, 2644, 1282, 365,
+    373, 1108, 1940, 2337, 2229, 1947, 1840, 1956,
+    2048, 1886, 1553, 1420, 1810, 2663, 3513, 3854,
+    3587, 3151, 3191, 3999, 4095, 4095, 4095, 4095,
+    3032, 2330, 2796, 4021, 4095, 4095, 4095, 3178,
+    2396, 2381, 2873, 3295, 3253, 2807, 2325, 2091,
+    2048, 1899, 1453, 865, 538, 744, 1328, 1772,
+    1624, 918, 212, 166, 965, 2085, 2614, 1931,
+    204, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 808, 1588, 1863, 1805, 1795,
+    2048, 2419, 2597, 2452, 2221, 2322, 2954, 3842,
+    4095, 4095, 3540, 2958, 3201, 4095, 4095, 4095,
+    4095, 4095, 3278, 2418, 2608, 3384, 3934, 3743,
+    2950, 2165, 1934, 2315, 2887, 3143, 2906, 2416
+  },
+  {
+    2048, 2249, 2630, 3002, 3260, 3501, 3941, 4095,
+    4095, 4095, 4095, 4095, 4095, 4095, 4095, 4095,
+    4095, 4095, 4095, 4095, 4095, 4095, 4095, 4095,
+    4095, 4095, 4095, 4095, 4095, 4095, 4095, 4095,
+    4095, 4095, 4095, 4095, 4095, 4095, 4095, 4095,
+    4095, 4095, 4095, 4095, 4095, 4095, 4095, 4095,
+    4095, 4095, 4095, 4095, 4095, 4095, 4095, 4095,
+    4095, 4049, 4012, 4008, 3770, 3277, 2720, 2299,
+    2048, 1828, 1484, 998, 506, 139, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 970, 2325, 2665, 2012, 1093,
+    817, 1633, 3210, 4095, 4095, 4095, 3150, 1878,
+    1285, 1384, 1706, 1717, 1236, 549, 159, 400,
+    1194, 2129, 2764, 2912, 2708, 2426, 2253, 2169,
+    2048, 1826, 1593, 1502, 1589, 1683, 1506, 908,
+    47, 0, 0, 0, 0, 102, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 276, 753, 1285, 1720,
+    2048, 2395, 2870, 3414, 3810, 3864, 3601, 3308,
+    3340, 3843, 4095, 4095, 4095, 4095, 4095, 4095,
+    4095, 4095, 4095, 4095, 4095, 4095, 4095, 4095,
+    4095, 4095, 4095, 4095, 4095, 3704, 3989, 4095,
+    4095, 4095, 4095, 4051, 2637, 2334, 3235, 4095,
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+    2301, 1517, 997, 790, 788, 838, 859, 880,
+    983, 1211, 1522, 1827, 2061, 2234, 2405, 2611,
+    2821, 2948, 2928, 2779, 2599, 2489, 2466, 2445,
+    2313, 2039, 1728, 1562, 1664, 1990, 2326, 2427,
+    2176, 1673, 1173, 911, 958, 1189, 1406, 1491,
+    1501, 1612, 1969, 2562, 3205, 3657, 3764, 3549,
+    3166, 2782, 2476, 2220, 1948, 1639, 1342, 1132
+  },
+  {
+    1698, 1773, 1820, 1816, 1815, 1903, 2116, 2392,
+    2597, 2628, 2490, 2304, 2205, 2228, 2272, 2169,
+    1833, 1355, 971, 922, 1281, 1894, 2479, 2798,
+    2801, 2627, 2480, 2462, 2511, 2466, 2208, 1776,
+    1348, 1125, 1199, 1500, 1857, 2122, 2250, 2295,
+    2330, 2380, 2410, 2380, 2296, 2217, 2198, 2224,
+    2211, 2068, 1786, 1475, 1299, 1363, 1630, 1944,
+    2144, 2189, 2181, 2278, 2549, 2887, 3065, 2889,
+    2353, 1666, 1131, 962, 1157, 1527, 1841, 1982,
+    2007, 2066, 2260, 2552, 2792, 2830, 2629, 2287,
+    1964, 1769, 1707, 1708, 1706, 1696, 1719, 1805,
+    1925, 2010, 2017, 1983, 2010, 2181, 2472, 2743,
+    2823, 2630, 2245, 1862, 1651, 1641, 1709, 1686,
+    1512, 1300, 1266, 1568, 2165, 2818, 3229, 3226,
+    2861, 2359, 1962, 1777, 1742, 1715, 1608, 1457,
+    1384, 1491, 1769, 2102, 2355, 2461, 2455, 2417,
+    2397, 2382, 2320, 2194, 2048, 1959, 1955, 1980,
+    1926, 1730, 1454, 1267, 1336, 1700, 2220, 2658,
+    2831, 2730, 2511, 2367, 2375, 2435, 2358, 2023,
+    1500, 1023, 850, 1085, 1613, 2178, 2549, 2649,
+    2573, 2476, 2453, 2475, 2444, 2289, 2036, 1789,
+    1645, 1623, 1668, 1707, 1722, 1757, 1865, 2044,
+    2221, 2309, 2288, 2232, 2258, 2417, 2627, 2712,
+    2523, 2064, 1519, 1141, 1095, 1348, 1705, 1955,
+    2024, 2014, 2106, 2397, 2804, 3100, 3075, 2682,
+    2080, 1535, 1250, 1262, 1450, 1650, 1772, 1839,
+    1932, 2093, 2286, 2428, 2466, 2419, 2361, 2343,
+    2345, 2295, 2138, 1899, 1684, 1592, 1641, 1740,
+    1769, 1688, 1589, 1642, 1956, 2475, 2974, 3197,
+    3021, 2542, 2014, 1673, 1595, 1665, 1693, 1573,
+    1374, 1286, 1466, 1913, 2451, 2843, 2941, 2767,
+    2472, 2218, 2076, 2006, 1933, 1822, 1711, 1662
+  },
+  {
+    951, 1041, 1085, 1054, 1021, 1103, 1347, 1669,
+    1899, 1910, 1721, 1488, 1376, 1423, 1500, 1419,
+    1094, 642, 321, 349, 753, 1341, 1831, 2037,
+    1960, 1750, 1562, 1452, 1366, 1237, 1069, 945,
+    951, 1087, 1258, 1350, 1327, 1264, 1269, 1380,
+    1513, 1528, 1361, 1099, 939, 1036, 1369, 1732,
+    1872, 1675, 1249, 858, 734, 921, 1266, 1546,
+    1625, 1531, 1394, 1318, 1305, 1277, 1174, 1031,
+    951, 1020, 1222, 1444, 1575, 1591, 1567, 1596,
+    1677, 1700, 1527, 1134, 670, 385, 457, 862,
+    1374, 1722, 1768, 1592, 1406, 1385, 1534, 1707,
+    1733, 1556, 1274, 1043, 960, 994, 1037, 1015,
+    951, 937, 1038, 1229, 1416, 1527, 1581, 1669,
+    1851, 2065, 2134, 1893, 1335, 659, 170, 85,
+    396, 890, 1303, 1500, 1536, 1575, 1725, 1943,
+    2073, 1978, 1660, 1262, 960, 843, 868, 927,
+    951, 961, 1025, 1167, 1326, 1408, 1377, 1312,
+    1354, 1580, 1907, 2126, 2039, 1619, 1047, 603,
+    477, 654, 940, 1131, 1161, 1133, 1213, 1471,
+    1812, 2042, 2014, 1735, 1354, 1049, 908, 902,
+    951, 1013, 1113, 1284, 1493, 1630, 1585, 1354,
+    1076, 946, 1074, 1384, 1664, 1714, 1501, 1184,
+    992, 1051, 1290, 1503, 1517, 1324, 1085, 997,
+    1139, 1416, 1637, 1659, 1485, 1235, 1041, 957,
+    951, 979, 1052, 1225, 1522, 1860, 2071, 2010,
+    1671, 1215, 870, 775, 884, 1023, 1040, 933,
+    855, 983, 1356, 1820, 2126, 2104, 1784, 1371,
+    1096, 1056, 1176, 1291, 1286, 1169, 1031, 957,
+    951, 965, 974, 1026, 1205, 1538, 1928, 2188,
+    2167, 1868, 1455, 1139, 1023, 1036, 1006, 822,
+    548, 389, 540, 1025, 1653, 2139, 2287, 2105,
+    1769, 1482, 1334, 1279, 1213, 1092, 962, 905
+  },
+  {
+    1705, 1810, 1851, 1793, 1729, 1803, 2071, 2426,
+    2667, 2650, 2412, 2142, 2026, 2092, 2194, 2142,
+    1878, 1538, 1355, 1478, 1855, 2278, 2533, 2547,
+    2396, 2204, 2035, 1868, 1680, 1526, 1535, 1796,
+    2245, 2669, 2834, 2657, 2271, 1930, 1811, 1898,
+    2008, 1966, 1754, 1523, 1462, 1641, 1955, 2217,
+    2316, 2290, 2266, 2334, 2459, 2523, 2444, 2257,
+    2078, 1988, 1947, 1828, 1555, 1212, 1025, 1198,
+    1745, 2444, 2971, 3109, 2878, 2489, 2168, 2005,
+    1934, 1849, 1722, 1631, 1671, 1844, 2041, 2131,
+    2083, 1993, 1996, 2131, 2293, 2317, 2134, 1851,
+    1684, 1783, 2103, 2422, 2511, 2311, 1976, 1746,
+    1770, 1998, 2247, 2350, 2274, 2104, 1943, 1812,
+    1670, 1504, 1397, 1492, 1864, 2416, 2903, 3085,
+    2900, 2499, 2127, 1942, 1906, 1857, 1671, 1393,
+    1204, 1277, 1622, 2075, 2421, 2546, 2502, 2421,
+    2390, 2384, 2319, 2163, 1991, 1920, 1988, 2095,
+    2069, 1827, 1472, 1246, 1355, 1799, 2359, 2743,
+    2786, 2547, 2232, 2025, 1959, 1943, 1880, 1778,
+    1740, 1857, 2100, 2330, 2406, 2306, 2136, 2031,
+    2025, 2022, 1899, 1644, 1407, 1399, 1716, 2238,
+    2693, 2843, 2653, 2299, 2026, 1965, 2060, 2150,
+    2116, 1973, 1823, 1744, 1719, 1672, 1577, 1518,
+    1634, 1988, 2472, 2859, 2956, 2749, 2409, 2151,
+    2067, 2064, 1966, 1691, 1341, 1139, 1254, 1663,
+    2166, 2528, 2639, 2553, 2401, 2267, 2141, 1983,
+    1813, 1736, 1849, 2129, 2405, 2467, 2232, 1832,
+    1528, 1525, 1816, 2191, 2399, 2335, 2094, 1881,
+    1829, 1916, 2015, 2029, 1982, 1987, 2122, 2343,
+    2512, 2511, 2349, 2146, 2017, 1964, 1877, 1655,
+    1335, 1111, 1198, 1657, 2314, 2862, 3060, 2889,
+    2534, 2226, 2079, 2041, 1987, 1858, 1710, 1647
+  },
+  {
+    1144, 1198, 1236, 1220, 1256, 1498, 1990, 2580,
+    3014, 3122, 2948, 2697, 2556, 2538, 2499, 2288,
+    1909, 1529, 1341, 1403, 1593, 1730, 1729, 1658,
+    1647, 1748, 1886, 1951, 1934, 1974, 2238, 2746,
+    3301, 3592, 3419, 2835, 2106, 1518, 1195, 1071,
+    1019, 992, 1053, 1274, 1625, 1966, 2173, 2255,
+    2364, 2643, 3076, 3449, 3501, 3131, 2477, 1826,
+    1399, 1224, 1171, 1115, 1063, 1132, 1407, 1829,
+    2218, 2417, 2426, 2383, 2429, 2573, 2682, 2623,
+    2404, 2187, 2145, 2298, 2464, 2405, 2021, 1449,
+    964, 779, 913, 1222, 1552, 1858, 2191, 2580,
+    2940, 3119, 3034, 2771, 2536, 2481, 2566, 2577,
+    2302, 1726, 1061, 603, 523, 776, 1178, 1581,
+    1963, 2380, 2832, 3200, 3316, 3115, 2717, 2344,
+    2153, 2114, 2064, 1872, 1576, 1354, 1362, 1583,
+    1829, 1895, 1741, 1524, 1469, 1683, 2078, 2463,
+    2706, 2818, 2888, 2952, 2932, 2709, 2273, 1779,
+    1455, 1419, 1570, 1669, 1535, 1206, 921, 932,
+    1318, 1939, 2561, 3025, 3314, 3477, 3507, 3315,
+    2831, 2128, 1439, 1019, 968, 1161, 1361, 1415,
+    1373, 1414, 1672, 2096, 2486, 2665, 2620, 2502,
+    2475, 2571, 2672, 2636, 2436, 2180, 2004, 1932,
+    1854, 1648, 1325, 1058, 1048, 1351, 1804, 2147,
+    2226, 2111, 2030, 2171, 2533, 2940, 3191, 3203,
+    3032, 2762, 2401, 1897, 1248, 607, 235, 329,
+    867, 1593, 2194, 2507, 2599, 2661, 2815, 3011,
+    3087, 2937, 2613, 2279, 2058, 1930, 1775, 1516,
+    1222, 1063, 1161, 1467, 1789, 1956, 1962, 1964,
+    2128, 2464, 2797, 2915, 2746, 2427, 2187, 2161,
+    2286, 2380, 2302, 2060, 1775, 1545, 1360, 1148,
+    909, 781, 967, 1553, 2391, 3157, 3555, 3510,
+    3184, 2829, 2581, 2401, 2164, 1816, 1448, 1202
+  },
+  {
+    1925, 1987, 2037, 2030, 2087, 2379, 2938, 3577,
+    4008, 4060, 3804, 3468, 3236, 3108, 2955, 2685,
+    2367, 2173, 2208, 2399, 2553, 2539, 2413, 2363,
+    2529, 2862, 3172, 3307, 3296, 3312, 3486, 3756,
+    3894, 3697, 3168, 2517, 1999, 1727, 1646, 1657,
+    1757, 2044, 2579, 3251, 3804, 4014, 3875, 3595,
+    3425, 3440, 3489, 3352, 2942, 2387, 1919, 1686,
+    1669, 1770, 1951, 2282, 2827, 3495, 4031, 4095,
+    3856, 3301, 2843, 2698, 2822, 2999, 3038, 2922,
+    2758, 2633, 2515, 2313, 2030, 1824, 1908, 2356,
+    3005, 3555, 3790, 3733, 3585, 3526, 3555, 3514,
+    3265, 2837, 2405, 2130, 2020, 1959, 1854, 1773,
+    1899, 2352, 3045, 3709, 4087, 4095, 3946, 3756,
+    3596, 3363, 2942, 2375, 1873, 1658, 1780, 2087,
+    2371, 2544, 2685, 2914, 3234, 3491, 3522, 3319,
+    3071, 3005, 3182, 3441, 3524, 3300, 2864, 2435,
+    2170, 2058, 1994, 1936, 1977, 2245, 2744, 3288,
+    3627, 3647, 3473, 3352, 3437, 3649, 3745, 3534,
+    3032, 2435, 1947, 1640, 1475, 1427, 1580, 2054,
+    2846, 3729, 4095, 4095, 4095, 3589, 3154, 2933,
+    2832, 2696, 2486, 2300, 2249, 2320, 2381, 2328,
+    2214, 2227, 2517, 3033, 3531, 3760, 3659, 3396,
+    3207, 3191, 3247, 3196, 2970, 2671, 2458, 2387,
+    2361, 2244, 2030, 1884, 2007, 2447, 3035, 3516,
+    3751, 3802, 3831, 3907, 3919, 3679, 3119, 2392,
+    1780, 1490, 1521, 1726, 1974, 2266, 2682, 3223,
+    3730, 3979, 3863, 3510, 3189, 3093, 3188, 3257,
+    3105, 2732, 2320, 2068, 2025, 2094, 2168, 2258,
+    2472, 2868, 3331, 3627, 3592, 3289, 2979, 2914,
+    3137, 3451, 3591, 3433, 3059, 2642, 2283, 1965,
+    1659, 1444, 1506, 1980, 2784, 3620, 4095, 4095,
+    4031, 3737, 3527, 3366, 3117, 2724, 2293, 2000
+  },
+  {
+    1117, 1190, 1253, 1255, 1331, 1665, 2274, 2933,
+    3330, 3305, 2964, 2552, 2241, 2014, 1766, 1479,
+    1282, 1326, 1599, 1899, 1996, 1843, 1635, 1631,
+    1925, 2370, 2721, 2850, 2827, 2790, 2766, 2626,
+    2237, 1641, 1080, 811, 903, 1198, 1477, 1667,
+    1883, 2264, 2785, 3234, 3381, 3179, 2793, 2430,
+    2150, 1848, 1419, 930, 618, 693, 1149, 1751,
+    2236, 2511, 2678, 2865, 3054, 3086, 2829, 2351,
+    1891, 1661, 1666, 1723, 1652, 1461, 1331, 1421,
+    1704, 1986, 2103, 2083, 2115, 2351, 2733, 3031,
+    3045, 2777, 2407, 2101, 1865, 1577, 1177, 795,
+    677, 970, 1568, 2188, 2594, 2767, 2863, 3009,
+    3154, 3114, 2775, 2226, 1695, 1355, 1187, 1058,
+    907, 856, 1104, 1712, 2486, 3090, 3293, 3127,
+    2813, 2546, 2345, 2112, 1804, 1533, 1464, 1633,
+    1869, 1930, 1727, 1422, 1300, 1520, 1986, 2451,
+    2733, 2842, 2898, 2949, 2891, 2584, 2038, 1467,
+    1139, 1151, 1352, 1496, 1473, 1406, 1518, 1908,
+    2452, 2917, 3161, 3218, 3188, 3073, 2747, 2108,
+    1260, 527, 249, 531, 1175, 1844, 2318, 2594,
+    2782, 2923, 2935, 2732, 2377, 2080, 2022, 2176,
+    2305, 2168, 1744, 1261, 1006, 1094, 1405, 1735,
+    1989, 2229, 2534, 2852, 3006, 2864, 2498, 2159,
+    2059, 2181, 2288, 2137, 1700, 1186, 861, 839,
+    1049, 1375, 1794, 2366, 3076, 3715, 3966, 3636,
+    2834, 1923, 1265, 989, 979, 1051, 1142, 1323,
+    1650, 2041, 2319, 2386, 2341, 2398, 2670, 3025,
+    3174, 2917, 2326, 1687, 1277, 1163, 1220, 1308,
+    1418, 1633, 1980, 2323, 2461, 2326, 2084, 2016,
+    2271, 2723, 3066, 3059, 2705, 2198, 1730, 1347,
+    999, 697, 596, 878, 1557, 2395, 3041, 3286,
+    3189, 2978, 2823, 2694, 2448, 2022, 1538, 1203
+  },
+  {
+    1117, 1190, 1253, 1255, 1331, 1665, 2274, 2933,
+    3330, 3305, 2964, 2552, 2241, 2014, 1766, 1479,
+    1282, 1326, 1599, 1899, 1996, 1843, 1635, 1631,
+    1925, 2370, 2721, 2850, 2827, 2790, 2766, 2626,
+    2237, 1641, 1080, 811, 903, 1198, 1477, 1667,
+    1883, 2264, 2785, 3234, 3381, 3179, 2793, 2430,
+    2150, 1848, 1419, 930, 618, 693, 1149, 1751,
+    2236, 2511, 2678, 2865, 3054, 3086, 2829, 2351,
+    1891, 1661, 1666, 1723, 1652, 1461, 1331, 1421,
+    1704, 1986, 2103, 2083, 2115, 2351, 2733, 3031,
+    3045, 2777, 2407, 2101, 1865, 1577, 1177, 795,
+    677, 970, 1568, 2188, 2594, 2767, 2863, 3009,
+    3154, 3114, 2775, 2226, 1695, 1355, 1187, 1058,
+    907, 856, 1104, 1712, 2486, 3090, 3293, 3127,
+    2813, 2546, 2345, 2112, 1804, 1533, 1464, 1633,
+    1869, 1930, 1727, 1422, 1300, 1520, 1986, 2451,
+    2733, 2842, 2898, 2949, 2891, 2584, 2038, 1467,
+    1139, 1151, 1352, 1496, 1473, 1406, 1518, 1908,
+    2452, 2917, 3161, 3218, 3188, 3073, 2747, 2108,
+    1260, 527, 249, 531, 1175, 1844, 2318, 2594,
+    2782, 2923, 2935, 2732, 2377, 2080, 2022, 2176,
+    2305, 2168, 1744, 1261, 1006, 1094, 1405, 1735,
+    1989, 2229, 2534, 2852, 3006, 2864, 2498, 2159,
+    2059, 2181, 2288, 2137, 1700, 1186, 861, 839,
+    1049, 1375, 1794, 2366, 3076, 3715, 3966, 3636,
+    2834, 1923, 1265, 989, 979, 1051, 1142, 1323,
+    1650, 2041, 2319, 2386, 2341, 2398, 2670, 3025,
+    3174, 2917, 2326, 1687, 1277, 1163, 1220, 1308,
+    1418, 1633, 1980, 2323, 2461, 2326, 2084, 2016,
+    2271, 2723, 3066, 3059, 2705, 2198, 1730, 1347,
+    999, 697, 596, 878, 1557, 2395, 3041, 3286,
+    3189, 2978, 2823, 2694, 2448, 2022, 1538, 1203
+  },
+  {
+    1718, 1921, 1999, 1656, 1132, 1032, 1712, 2848,
+    3643, 3512, 2596, 1623, 1246, 1506, 1915, 2017,
+    1844, 1803, 2145, 2612, 2653, 2019, 1111, 688,
+    1190, 2308, 3242, 3398, 2864, 2229, 1969, 2022,
+    1965, 1564, 1094, 1081, 1711, 2557, 2915, 2470,
+    1625, 1150, 1483, 2345, 3029, 3067, 2612, 2185,
+    2096, 2139, 1883, 1234, 647, 732, 1629, 2782,
+    3379, 3061, 2216, 1596, 1624, 2069, 2372, 2248,
+    1953, 1942, 2320, 2666, 2456, 1648, 817, 673,
+    1391, 2432, 3022, 2838, 2248, 1891, 2042, 2394,
+    2450, 2085, 1692, 1745, 2251, 2681, 2470, 1618,
+    757, 605, 1314, 2340, 2962, 2917, 2559, 2405,
+    2574, 2687, 2333, 1581, 995, 1097, 1825, 2543,
+    2617, 2016, 1334, 1217, 1764, 2469, 2751, 2515,
+    2186, 2209, 2546, 2708, 2296, 1481, 909, 1099,
+    1922, 2684, 2761, 2163, 1491, 1343, 1761, 2265,
+    2393, 2177, 2070, 2401, 2954, 3126, 2538, 1473,
+    689, 746, 1508, 2285, 2490, 2151, 1804, 1902,
+    2355, 2664, 2482, 2010, 1796, 2145, 2747, 2934,
+    2340, 1301, 593, 739, 1553, 2355, 2620, 2417,
+    2233, 2394, 2701, 2669, 2100, 1381, 1161, 1710,
+    2604, 3073, 2700, 1796, 1093, 1072, 1566, 2017,
+    2081, 1946, 2065, 2586, 3118, 3090, 2358, 1432,
+    1049, 1496, 2335, 2804, 2518, 1780, 1244, 1274,
+    1656, 1913, 1860, 1810, 2187, 2986, 3642, 3514,
+    2517, 1276, 618, 874, 1639, 2210, 2240, 1983,
+    1918, 2192, 2465, 2316, 1768, 1353, 1601, 2477,
+    3320, 3416, 2637, 1569, 968, 1111, 1625, 1943,
+    1888, 1782, 2016, 2544, 2867, 2552, 1738, 1103,
+    1261, 2175, 3150, 3442, 2895, 2013, 1437, 1358,
+    1450, 1342, 1089, 1143, 1827, 2881, 3588, 3398,
+    2455, 1508, 1250, 1731, 2377, 2578, 2246, 1815
+  },
+  {
+    1956, 2312, 2492, 2158, 1587, 1440, 2075, 3103,
+    3686, 3310, 2251, 1289, 964, 1148, 1318, 1207,
+    1102, 1470, 2337, 3132, 3196, 2466, 1596, 1370,
+    1972, 2846, 3266, 3016, 2500, 2211, 2166, 1932,
+    1202, 279, 0, 514, 1825, 2970, 3298, 2911,
+    2460, 2438, 2721, 2794, 2395, 1846, 1708, 2128,
+    2613, 2496, 1639, 644, 310, 889, 1878, 2537,
+    2593, 2411, 2483, 2835, 2993, 2546, 1687, 1118,
+    1375, 2266, 3014, 2986, 2268, 1526, 1315, 1565,
+    1757, 1572, 1273, 1419, 2191, 3093, 3371, 2751,
+    1734, 1144, 1359, 2019, 2463, 2416, 2209, 2316,
+    2752, 2995, 2547, 1529, 660, 598, 1311, 2116,
+    2356, 2015, 1666, 1816, 2379, 2798, 2684, 2258,
+    2113, 2543, 3164, 3261, 2510, 1347, 574, 613,
+    1161, 1574, 1564, 1455, 1755, 2519, 3211, 3232,
+    2567, 1849, 1757, 2343, 2992, 3048, 2449, 1737,
+    1454, 1580, 1619, 1216, 628, 520, 1267, 2504,
+    3408, 3450, 2855, 2318, 2281, 2532, 2517, 2013,
+    1407, 1298, 1822, 2459, 2530, 1902, 1140, 958,
+    1517, 2286, 2609, 2356, 2002, 2057, 2485, 2743,
+    2396, 1643, 1184, 1516, 2413, 3111, 3038, 2338,
+    1674, 1530, 1760, 1837, 1500, 1087, 1183, 1941,
+    2834, 3122, 2577, 1723, 1337, 1707, 2410, 2796,
+    2657, 2373, 2410, 2734, 2807, 2177, 1045, 176,
+    210, 1065, 2032, 2466, 2362, 2242, 2514, 3006,
+    3170, 2727, 2032, 1745, 2140, 2771, 2886, 2175,
+    1096, 437, 583, 1209, 1704, 1825, 1894, 2338,
+    3102, 3601, 3299, 2321, 1415, 1285, 1930, 2673,
+    2829, 2339, 1732, 1513, 1639, 1648, 1264, 805,
+    906, 1822, 3065, 3773, 3486, 2550, 1755, 1582,
+    1830, 1959, 1751, 1543, 1806, 2530, 3118, 2944,
+    2015, 1030, 751, 1302, 2097, 2453, 2239, 1915
+  },
+  {
+    1964, 2362, 2559, 2189, 1568, 1414, 2067, 3059,
+    3526, 3046, 2033, 1276, 1149, 1327, 1288, 987,
+    936, 1584, 2708, 3521, 3425, 2621, 1903, 1856,
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+    2197, 1776, 1790, 1858, 1476, 702, 214, 644,
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+    3560, 3092, 2049, 1221, 1077, 1352, 1459, 1214,
+    1058, 1522, 2535, 3375, 3355, 2530, 1651, 1420,
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+  {
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+    2920, 2299, 1919, 1689, 1347, 896, 694, 1077,
+    1938, 2737, 2992, 2720, 2385, 2390, 2662, 2769,
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+    2665, 3183, 3442, 3110, 2344, 1619, 1245, 1108,
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+    2157, 2652, 3327, 3959, 4051, 3323, 2069, 966,
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+    1822, 2522, 3289, 3542, 3008, 2017, 1205, 958,
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+  {
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+    3601, 3926, 3426, 2610, 2030, 1793, 1607, 1266,
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+    1734, 1783, 1780, 1757, 1784, 1880, 2039, 2201,
+    2229, 2073, 1483, 1629, 2971, 1691, 851, 1072,
+    1864, 2609, 2790, 2451, 1961, 1515, 1103, 1847,
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+    1115, 1349, 2022, 3000, 3585, 1751, 1024, 1398,
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+  {
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+    2037, 959, 3051, 1449, 1562, 2284, 2050, 1433,
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+    1972, 2055, 2014, 1821, 1560, 1700, 2938, 1246,
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+    1875, 2124, 2270, 1727, 862, 2745, 2341, 1478,
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+    2007, 2108, 1943, 1793, 1857, 1922, 1671, 2226,
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+    1813, 2043, 2128, 1982, 1677, 1472, 1753, 3561,
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+    2028, 1730, 1723, 1922, 2063, 1955, 1810, 1841,
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+    1926, 2700, 844, 2684, 1928, 1498, 1787, 2108,
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+    998, 1559, 2529, 2010, 2009, 1560, 1460, 2158,
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+  {
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+    2677, 2783, 2720, 2510, 2188, 1792, 1355, 904,
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+    2034, 1383, 1679, 1814, 1792, 1641, 1368, 1075,
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+  {
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+    2205, 2259, 2350, 2372, 2259, 2048, 1854, 1787,
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+    2489, 2596, 2626, 2558, 2462, 2398, 2382, 2409,
+    2471, 2548, 2614, 2662, 2712, 2794, 2912, 3014,
+    3002, 2872, 2730, 2651, 2655, 2764, 3057, 3829,
+    2767, 1607, 736, 79, 241, 388, 280, 179,
+    1024, 1882, 2507, 2783, 2752, 2559, 2345, 2185
+  }
+};
diff --git a/keyboards/planck/light/config.h b/keyboards/planck/light/config.h
index c7bc9cb1a..c570ec766 100644
--- a/keyboards/planck/light/config.h
+++ b/keyboards/planck/light/config.h
@@ -15,8 +15,8 @@
 #define MATRIX_ROW_PINS { B0, E7, F0, F1 }
 #define MATRIX_COL_PINS { E6, E3, E4, D3, D4, D5, C0, A7, A6, E1, E0, D7 }
-#define C6_AUDIO
+#define AUDIO_PIN C6
-#define B5_AUDIO
+#define AUDIO_PIN_ALT B5
 #undef BACKLIGHT_PIN
diff --git a/keyboards/planck/rev6/config.h b/keyboards/planck/rev6/config.h
index f60b0ec2e..055610c69 100644
--- a/keyboards/planck/rev6/config.h
+++ b/keyboards/planck/rev6/config.h
@@ -53,8 +53,10 @@
 #define MUSIC_MAP
 #undef AUDIO_VOICES
-// Note: following undef isn't really necessary on STM32, C6_AUDIO is AVR related
+#undef AUDIO_PIN
-#undef C6_AUDIO
+#define AUDIO_PIN A5
+#define AUDIO_PIN_ALT A4
+#define AUDIO_PIN_ALT_AS_NEGATIVE
 /* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
 // #define DEBOUNCE 6
diff --git a/keyboards/preonic/config.h b/keyboards/preonic/config.h
index c4aa5805d..f08be58c6 100644
--- a/keyboards/preonic/config.h
+++ b/keyboards/preonic/config.h
@@ -41,7 +41,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define QMK_SPEAKER C6
 #define AUDIO_VOICES
-#define C6_AUDIO
+#define AUDIO_PIN C6
 #define BACKLIGHT_PIN B7
diff --git a/keyboards/preonic/rev3/config.h b/keyboards/preonic/rev3/config.h
index 773a9c5fb..e8b09e848 100644
--- a/keyboards/preonic/rev3/config.h
+++ b/keyboards/preonic/rev3/config.h
@@ -40,8 +40,10 @@
 #define MUSIC_MAP
 #undef AUDIO_VOICES
-// Note: following undef isn't really necessary on STM32, C6_AUDIO is AVR related
+#undef AUDIO_PIN
-#undef C6_AUDIO
+#define AUDIO_PIN A5
+#define AUDIO_PIN_ALT A4
+#define AUDIO_PIN_ALT_AS_NEGATIVE
 /* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
 // #define DEBOUNCE 6
diff --git a/keyboards/scarletbandana/config.h b/keyboards/scarletbandana/config.h
index 38a15f676..b9c8dd9b0 100644
--- a/keyboards/scarletbandana/config.h
+++ b/keyboards/scarletbandana/config.h
@@ -45,7 +45,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define QMK_SPEAKER C6
 #ifdef AUDIO_ENABLE
-#define C6_AUDIO
+#define AUDIO_PIN C6
 #define STARTUP_SONG SONG(PREONIC_SOUND)
 // Disable music mode to keep the firmware size down
 #define NO_MUSIC_MODE
diff --git a/keyboards/silverbullet44/config.h b/keyboards/silverbullet44/config.h
index dfd5e0aa9..cd78ef341 100644
--- a/keyboards/silverbullet44/config.h
+++ b/keyboards/silverbullet44/config.h
@@ -111,7 +111,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Audio */
 #ifdef AUDIO_ENABLE
-  #define B6_AUDIO
+  #define AUDIO_PIN B6
  #define STARTUP_SONG SONG(STARTUP_SOUND)
  #define AUDIO_CLICKY
  #define AUDIO_CLICKY_FREQ_RANDOMNESS 1.0f
diff --git a/keyboards/splitkb/zima/config.h b/keyboards/splitkb/zima/config.h
index b39ef7308..fcfa37ff3 100644
--- a/keyboards/splitkb/zima/config.h
+++ b/keyboards/splitkb/zima/config.h
@@ -49,7 +49,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 // #define QMK_ESC_INPUT C6
 // #define QMK_SPEAKER B6
-#define B6_AUDIO
+#define AUDIO_PIN B6
 #define AUDIO_CLICKY
 #define NO_MUSIC_MODE
diff --git a/keyboards/subatomic/config.h b/keyboards/subatomic/config.h
index db65287fc..b19339ad6 100644
--- a/keyboards/subatomic/config.h
+++ b/keyboards/subatomic/config.h
@@ -37,7 +37,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define UNUSED_PINS
 // #define AUDIO_VOICES
-// #define C6_AUDIO
+// #define AUDIO_PIN C6
 #define BACKLIGHT_PIN B7
diff --git a/keyboards/tetris/config.h b/keyboards/tetris/config.h
index a38c3a8d4..1f13f5f16 100755
--- a/keyboards/tetris/config.h
+++ b/keyboards/tetris/config.h
@@ -34,7 +34,7 @@
 #define NO_ACTION_FUNCTION
 #ifdef AUDIO_ENABLE
-  #define B5_AUDIO
+  #define AUDIO_PIN B5
  #define STARTUP_SONG SONG(ONE_UP_SOUND)
  #define NO_MUSIC_MODE
 #endif
diff --git a/keyboards/vitamins_included/rev1/config.h b/keyboards/vitamins_included/rev1/config.h
index ff0c6bcb5..e8390aa27 100644
--- a/keyboards/vitamins_included/rev1/config.h
+++ b/keyboards/vitamins_included/rev1/config.h
@@ -61,7 +61,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Audio settings */
 #ifdef AUDIO_ENABLE
-    #define C6_AUDIO // Define this to enable the buzzer
+    #define AUDIO_PIN C6 // Define this to enable the buzzer
 #endif
 /*
diff --git a/keyboards/vitamins_included/rev2/config.h b/keyboards/vitamins_included/rev2/config.h
index ebbbc15ea..8bf640f0b 100644
--- a/keyboards/vitamins_included/rev2/config.h
+++ b/keyboards/vitamins_included/rev2/config.h
@@ -61,7 +61,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Audio settings */
 #ifdef AUDIO_ENABLE
-    #define C6_AUDIO // Define this to enable the buzzer
+    #define AUDIO_PIN C6 // Define this to enable the buzzer
 #endif
 #define QMK_ESC_OUTPUT F1 // usually COL
diff --git a/keyboards/wilba_tech/wt60_xt/config.h b/keyboards/wilba_tech/wt60_xt/config.h
index 6ddad99df..5914e59fd 100644
--- a/keyboards/wilba_tech/wt60_xt/config.h
+++ b/keyboards/wilba_tech/wt60_xt/config.h
@@ -25,7 +25,7 @@
 #define MANUFACTURER    wilba.tech
 #define PRODUCT         wilba.tech WT60-XT
-#define C6_AUDIO
+#define AUDIO_PIN C6
 #define AUDIO_CLICKY
 /* key matrix size */
diff --git a/keyboards/yoichiro/lunakey_mini/config.h b/keyboards/yoichiro/lunakey_mini/config.h
index 86290cd4e..abbecef44 100644
--- a/keyboards/yoichiro/lunakey_mini/config.h
+++ b/keyboards/yoichiro/lunakey_mini/config.h
@@ -89,7 +89,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #endif
 /* Audio Support */
-#define C6_AUDIO
+#define AUDIO_PIN C6
 /* Debounce reduces chatter (unintended double-presses) - set 0 if debouncing is not needed */
 #define DEBOUNCE 5
diff --git a/layouts/community/numpad_5x6/bjohnson/config.h b/layouts/community/numpad_5x6/bjohnson/config.h
index 668450d88..6f1c53970 100644
--- a/layouts/community/numpad_5x6/bjohnson/config.h
+++ b/layouts/community/numpad_5x6/bjohnson/config.h
@@ -1,7 +1,5 @@
 #pragma once
-// #define B6_AUDIO
 #if defined(RGBLIGHT_ENABLE) && !defined(RGBLED_NUM)
 #define RGB_DI_PIN B7
 #define RGBLED_NUM 13     // Number of LEDs
diff --git a/layouts/community/numpad_5x6/drashna/config.h b/layouts/community/numpad_5x6/drashna/config.h
index 97c1170d7..1f485e193 100644
--- a/layouts/community/numpad_5x6/drashna/config.h
+++ b/layouts/community/numpad_5x6/drashna/config.h
@@ -16,7 +16,6 @@
 #pragma once
-// #define B6_AUDIO
 #if defined(RGBLIGHT_ENABLE) && !defined(RGBLED_NUM)
 #    define RGB_DI_PIN B1
diff --git a/layouts/community/ortho_4x12/bakingpy/config.h b/layouts/community/ortho_4x12/bakingpy/config.h
index a153adffb..f7d2c2425 100644
--- a/layouts/community/ortho_4x12/bakingpy/config.h
+++ b/layouts/community/ortho_4x12/bakingpy/config.h
@@ -16,5 +16,5 @@
 #define RGBLIGHT_VAL_STEP 8
 #ifdef AUDIO_ENABLE
-#define C6_AUDIO
+#define AUDIO_PIN C6
 #endif
diff --git a/layouts/community/ortho_5x12/drashna/config.h b/layouts/community/ortho_5x12/drashna/config.h
index 76bd642a3..619b460a7 100644
--- a/layouts/community/ortho_5x12/drashna/config.h
+++ b/layouts/community/ortho_5x12/drashna/config.h
@@ -33,6 +33,6 @@
 #    define RGBLIGHT_EFFECT_KNIGHT_OFFSET 3
 #    define RGBLIGHT_EFFECT_KNIGHT_LED_NUM 14
-#    define B7_AUDIO
+#    define AUDIO_PIN B7
 #    define NO_MUSIC_MODE
 #endif
diff --git a/layouts/community/ortho_5x14/yet-another-developer/config.h b/layouts/community/ortho_5x14/yet-another-developer/config.h
index 7504338ff..3f8dbd3c5 100644
--- a/layouts/community/ortho_5x14/yet-another-developer/config.h
+++ b/layouts/community/ortho_5x14/yet-another-developer/config.h
@@ -17,6 +17,6 @@
 #    define RGBLIGHT_EFFECT_KNIGHT_OFFSET 3
 #    define RGBLIGHT_EFFECT_KNIGHT_LED_NUM 14
-#    define B7_AUDIO
+#    define AUDIO_PIN B7
 #    define NO_MUSIC_MODE
 #endif
diff --git a/layouts/community/split_3x6_3/drashna/config.h b/layouts/community/split_3x6_3/drashna/config.h
index b9b1d073d..17d7b9ec7 100644
--- a/layouts/community/split_3x6_3/drashna/config.h
+++ b/layouts/community/split_3x6_3/drashna/config.h
@@ -74,7 +74,7 @@
 #endif
 #ifdef AUDIO_ENABLE
-#    define B6_AUDIO
+#    define AUDIO_PIN B6
 #    define NO_MUSIC_MODE
 #endif
diff --git a/quantum/audio/audio.c b/quantum/audio/audio.c
new file mode 100644
index 000000000..46277dd70
--- /dev/null
+++ b/quantum/audio/audio.c
@@ -0,0 +1,539 @@
+/* Copyright 2016-2020 Jack Humbert
+ * Copyright 2020 JohSchneider
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "audio.h"
+#include "eeconfig.h"
+#include "timer.h"
+#include "wait.h"
+/* audio system:
+ *
+ * audio.[ch] takes care of all overall state, tracking the actively playing
+ *            notes/tones; the notes a SONG consists of;
+ *            ...
+ *            = everything audio-related that is platform agnostic
+ *
+ * driver_[avr|chibios]_[dac|pwm] take care of the lower hardware dependent parts,
+ *            specific to each platform and the used subsystem/driver to drive
+ *            the output pins/channels with the calculated frequencies for each
+ *            active tone
+ *            as part of this, the driver has to trigger regular state updates by
+ *            calling 'audio_update_state' through some sort of timer - be it a
+ *            dedicated one or piggybacking on for example the timer used to
+ *            generate a pwm signal/clock.
+ *
+ *
+ * A Note on terminology:
+ * tone, pitch and frequency are used somewhat interchangeably, in a strict Wikipedia-sense:
+ *    "(Musical) tone, a sound characterized by its duration, pitch (=frequency),
+ *    intensity (=volume), and timbre"
+ * - intensity/volume is currently not handled at all, although the 'dac_additive' driver could do so
+ * - timbre is handled globally (TODO: only used with the pwm drivers at the moment)
+ *
+ * in musical_note.h a 'note' is the combination of a pitch and a duration
+ * these are used to create SONG arrays; during playback their frequencies
+ * are handled as single successive tones, while the durations are
+ * kept track of in 'audio_update_state'
+ *
+ * 'voice' as it is used here, equates to a sort of instrument with its own
+ * characteristics sound and effects
+ * the audio system as-is deals only with (possibly multiple) tones of one
+ * instrument/voice at a time (think: chords). since the number of tones that
+ * can be reproduced depends on the hardware/driver in use: pwm can only
+ * reproduce one tone per output/speaker; DACs can reproduce/mix multiple
+ * when doing additive synthesis.
+ *
+ * 'duration' can either be in the beats-per-minute related unit found in
+ * musical_notes.h, OR in ms; keyboards create SONGs with the former, while
+ * the internal state of the audio system does its calculations with the later - ms
+ */
+#ifndef AUDIO_TONE_STACKSIZE
+#    define AUDIO_TONE_STACKSIZE 8
+#endif
+uint8_t        active_tones = 0;             // number of tones pushed onto the stack by audio_play_tone - might be more than the hardware is able to reproduce at any single time
+musical_tone_t tones[AUDIO_TONE_STACKSIZE];  // stack of currently active tones
+bool playing_melody = false;  // playing a SONG?
+bool playing_note   = false;  // or (possibly multiple simultaneous) tones
+bool state_changed  = false;  // global flag, which is set if anything changes with the active_tones
+// melody/SONG related state variables
+float (*notes_pointer)[][2];                            // SONG, an array of MUSICAL_NOTEs
+uint16_t notes_count;                                   // length of the notes_pointer array
+bool     notes_repeat;                                  // PLAY_SONG or PLAY_LOOP?
+uint16_t melody_current_note_duration = 0;              // duration of the currently playing note from the active melody, in ms
+uint8_t  note_tempo                   = TEMPO_DEFAULT;  // beats-per-minute
+uint16_t current_note                 = 0;              // index into the array at notes_pointer
+bool     note_resting                 = false;          // if a short pause was introduced between two notes with the same frequency while playing a melody
+uint16_t last_timestamp               = 0;
+#ifdef AUDIO_ENABLE_TONE_MULTIPLEXING
+#    ifndef AUDIO_MAX_SIMULTANEOUS_TONES
+#        define AUDIO_MAX_SIMULTANEOUS_TONES 3
+#    endif
+uint16_t tone_multiplexing_rate        = AUDIO_TONE_MULTIPLEXING_RATE_DEFAULT;
+uint8_t  tone_multiplexing_index_shift = 0;  // offset used on active-tone array access
+#endif
+// provided and used by voices.c
+extern uint8_t  note_timbre;
+extern bool     glissando;
+extern bool     vibrato;
+extern uint16_t voices_timer;
+#ifndef STARTUP_SONG
+#    define STARTUP_SONG SONG(STARTUP_SOUND)
+#endif
+#ifndef AUDIO_ON_SONG
+#    define AUDIO_ON_SONG SONG(AUDIO_ON_SOUND)
+#endif
+#ifndef AUDIO_OFF_SONG
+#    define AUDIO_OFF_SONG SONG(AUDIO_OFF_SOUND)
+#endif
+float startup_song[][2]   = STARTUP_SONG;
+float audio_on_song[][2]  = AUDIO_ON_SONG;
+float audio_off_song[][2] = AUDIO_OFF_SONG;
+static bool    audio_initialized    = false;
+static bool    audio_driver_stopped = true;
+audio_config_t audio_config;
+void audio_init() {
+    if (audio_initialized) {
+        return;
+    }
+    // Check EEPROM
+#ifdef EEPROM_ENABLE
+    if (!eeconfig_is_enabled()) {
+        eeconfig_init();
+    }
+    audio_config.raw = eeconfig_read_audio();
+#else  // EEPROM settings
+    audio_config.enable        = true;
+#    ifdef AUDIO_CLICKY_ON
+    audio_config.clicky_enable = true;
+#    endif
+#endif  // EEPROM settings
+    for (uint8_t i = 0; i < AUDIO_TONE_STACKSIZE; i++) {
+        tones[i] = (musical_tone_t){.time_started = 0, .pitch = -1.0f, .duration = 0};
+    }
+    if (!audio_initialized) {
+        audio_driver_initialize();
+        audio_initialized = true;
+    }
+    stop_all_notes();
+}
+void audio_startup(void) {
+    if (audio_config.enable) {
+        PLAY_SONG(startup_song);
+    }
+    last_timestamp = timer_read();
+}
+void audio_toggle(void) {
+    if (audio_config.enable) {
+        stop_all_notes();
+    }
+    audio_config.enable ^= 1;
+    eeconfig_update_audio(audio_config.raw);
+    if (audio_config.enable) {
+        audio_on_user();
+    }
+}
+void audio_on(void) {
+    audio_config.enable = 1;
+    eeconfig_update_audio(audio_config.raw);
+    audio_on_user();
+    PLAY_SONG(audio_on_song);
+}
+void audio_off(void) {
+    PLAY_SONG(audio_off_song);
+    wait_ms(100);
+    audio_stop_all();
+    audio_config.enable = 0;
+    eeconfig_update_audio(audio_config.raw);
+}
+bool audio_is_on(void) { return (audio_config.enable != 0); }
+void audio_stop_all() {
+    if (audio_driver_stopped) {
+        return;
+    }
+    active_tones = 0;
+    audio_driver_stop();
+    playing_melody = false;
+    playing_note   = false;
+    melody_current_note_duration = 0;
+    for (uint8_t i = 0; i < AUDIO_TONE_STACKSIZE; i++) {
+        tones[i] = (musical_tone_t){.time_started = 0, .pitch = -1.0f, .duration = 0};
+    }
+    audio_driver_stopped = true;
+}
+void audio_stop_tone(float pitch) {
+    if (pitch < 0.0f) {
+        pitch = -1 * pitch;
+    }
+    if (playing_note) {
+        if (!audio_initialized) {
+            audio_init();
+        }
+        bool found = false;
+        for (int i = AUDIO_TONE_STACKSIZE - 1; i >= 0; i--) {
+            found = (tones[i].pitch == pitch);
+            if (found) {
+                tones[i] = (musical_tone_t){.time_started = 0, .pitch = -1.0f, .duration = 0};
+                for (int j = i; (j < AUDIO_TONE_STACKSIZE - 1); j++) {
+                    tones[j]     = tones[j + 1];
+                    tones[j + 1] = (musical_tone_t){.time_started = 0, .pitch = -1.0f, .duration = 0};
+                }
+                break;
+            }
+        }
+        if (!found) {
+            return;
+        }
+        state_changed = true;
+        active_tones--;
+        if (active_tones < 0) active_tones = 0;
+#ifdef AUDIO_ENABLE_TONE_MULTIPLEXING
+        if (tone_multiplexing_index_shift >= active_tones) {
+            tone_multiplexing_index_shift = 0;
+        }
+#endif
+        if (active_tones == 0) {
+            audio_driver_stop();
+            audio_driver_stopped = true;
+            playing_note         = false;
+        }
+    }
+}
+void audio_play_note(float pitch, uint16_t duration) {
+    if (!audio_config.enable) {
+        return;
+    }
+    if (!audio_initialized) {
+        audio_init();
+    }
+    if (pitch < 0.0f) {
+        pitch = -1 * pitch;
+    }
+    // round-robin: shifting out old tones, keeping only unique ones
+    // if the new frequency is already amongst the active tones, shift it to the top of the stack
+    bool found = false;
+    for (int i = active_tones - 1; i >= 0; i--) {
+        found = (tones[i].pitch == pitch);
+        if (found) {
+            for (int j = i; (j < active_tones - 1); j++) {
+                tones[j]     = tones[j + 1];
+                tones[j + 1] = (musical_tone_t){.time_started = timer_read(), .pitch = pitch, .duration = duration};
+            }
+            return;  // since this frequency played already, the hardware was already started
+        }
+    }
+    // frequency/tone is actually new, so we put it on the top of the stack
+    active_tones++;
+    if (active_tones > AUDIO_TONE_STACKSIZE) {
+        active_tones = AUDIO_TONE_STACKSIZE;
+        // shift out the oldest tone to make room
+        for (int i = 0; i < active_tones - 1; i++) {
+            tones[i] = tones[i + 1];
+        }
+    }
+    state_changed           = true;
+    playing_note            = true;
+    tones[active_tones - 1] = (musical_tone_t){.time_started = timer_read(), .pitch = pitch, .duration = duration};
+    // TODO: needs to be handled per note/tone -> use its timestamp instead?
+    voices_timer = timer_read();  // reset to zero, for the effects added by voices.c
+    if (audio_driver_stopped) {
+        audio_driver_start();
+        audio_driver_stopped = false;
+    }
+}
+void audio_play_tone(float pitch) { audio_play_note(pitch, 0xffff); }
+void audio_play_melody(float (*np)[][2], uint16_t n_count, bool n_repeat) {
+    if (!audio_config.enable) {
+        audio_stop_all();
+        return;
+    }
+    if (!audio_initialized) {
+        audio_init();
+    }
+    // Cancel note if a note is playing
+    if (playing_note) audio_stop_all();
+    playing_melody = true;
+    note_resting   = false;
+    notes_pointer = np;
+    notes_count   = n_count;
+    notes_repeat  = n_repeat;
+    current_note = 0;  // note in the melody-array/list at note_pointer
+    // start first note manually, which also starts the audio_driver
+    // all following/remaining notes are played by 'audio_update_state'
+    audio_play_note((*notes_pointer)[current_note][0], audio_duration_to_ms((*notes_pointer)[current_note][1]));
+    last_timestamp               = timer_read();
+    melody_current_note_duration = audio_duration_to_ms((*notes_pointer)[current_note][1]);
+}
+float click[2][2];
+void  audio_play_click(uint16_t delay, float pitch, uint16_t duration) {
+    uint16_t duration_tone  = audio_ms_to_duration(duration);
+    uint16_t duration_delay = audio_ms_to_duration(delay);
+    if (delay <= 0.0f) {
+        click[0][0] = pitch;
+        click[0][1] = duration_tone;
+        click[1][0] = 0.0f;
+        click[1][1] = 0.0f;
+        audio_play_melody(&click, 1, false);
+    } else {
+        // first note is a rest/pause
+        click[0][0] = 0.0f;
+        click[0][1] = duration_delay;
+        // second note is the actual click
+        click[1][0] = pitch;
+        click[1][1] = duration_tone;
+        audio_play_melody(&click, 2, false);
+    }
+}
+bool audio_is_playing_note(void) { return playing_note; }
+bool audio_is_playing_melody(void) { return playing_melody; }
+uint8_t audio_get_number_of_active_tones(void) { return active_tones; }
+float audio_get_frequency(uint8_t tone_index) {
+    if (tone_index >= active_tones) {
+        return 0.0f;
+    }
+    return tones[active_tones - tone_index - 1].pitch;
+}
+float audio_get_processed_frequency(uint8_t tone_index) {
+    if (tone_index >= active_tones) {
+        return 0.0f;
+    }
+    int8_t index = active_tones - tone_index - 1;
+    // new tones are stacked on top (= appended at the end), so the most recent/current is MAX-1
+#ifdef AUDIO_ENABLE_TONE_MULTIPLEXING
+    index = index - tone_multiplexing_index_shift;
+    if (index < 0)  // wrap around
+        index += active_tones;
+#endif
+    if (tones[index].pitch <= 0.0f) {
+        return 0.0f;
+    }
+    return voice_envelope(tones[index].pitch);
+}
+bool audio_update_state(void) {
+    if (!playing_note && !playing_melody) {
+        return false;
+    }
+    bool     goto_next_note = false;
+    uint16_t current_time   = timer_read();
+    if (playing_melody) {
+        goto_next_note = timer_elapsed(last_timestamp) >= melody_current_note_duration;
+        if (goto_next_note) {
+            uint16_t delta         = timer_elapsed(last_timestamp) - melody_current_note_duration;
+            last_timestamp         = current_time;
+            uint16_t previous_note = current_note;
+            current_note++;
+            voices_timer = timer_read();  // reset to zero, for the effects added by voices.c
+            if (current_note >= notes_count) {
+                if (notes_repeat) {
+                    current_note = 0;
+                } else {
+                    audio_stop_all();
+                    return false;
+                }
+            }
+            if (!note_resting && (*notes_pointer)[previous_note][0] == (*notes_pointer)[current_note][0]) {
+                note_resting = true;
+                // special handling for successive notes of the same frequency:
+                // insert a short pause to separate them audibly
+                audio_play_note(0.0f, audio_duration_to_ms(2));
+                current_note                 = previous_note;
+                melody_current_note_duration = audio_duration_to_ms(2);
+            } else {
+                note_resting = false;
+                // TODO: handle glissando here (or remember previous and current tone)
+                /* there would need to be a freq(here we are) -> freq(next note)
+                 * and do slide/glissando in between problem here is to know which
+                 * frequency on the stack relates to what other? e.g. a melody starts
+                 * tones in a sequence, and stops expiring one, so the most recently
+                 * stopped is the starting point for a glissando to the most recently started?
+                 * how to detect and preserve this relation?
+                 * and what about user input, chords, ...?
+                 */
+                // '- delta': Skip forward in the next note's length if we've over shot
+                //            the last, so the overall length of the song is the same
+                uint16_t duration = audio_duration_to_ms((*notes_pointer)[current_note][1]);
+                // Skip forward past any completely missed notes
+                while (delta > duration && current_note < notes_count - 1) {
+                    delta -= duration;
+                    current_note++;
+                    duration = audio_duration_to_ms((*notes_pointer)[current_note][1]);
+                }
+                if (delta < duration) {
+                    duration -= delta;
+                } else {
+                    // Only way to get here is if it is the last note and
+                    // we have completely missed it. Play it for 1ms...
+                    duration = 1;
+                }
+                audio_play_note((*notes_pointer)[current_note][0], duration);
+                melody_current_note_duration = duration;
+            }
+        }
+    }
+    if (playing_note) {
+#ifdef AUDIO_ENABLE_TONE_MULTIPLEXING
+        tone_multiplexing_index_shift = (int)(current_time / tone_multiplexing_rate) % MIN(AUDIO_MAX_SIMULTANEOUS_TONES, active_tones);
+        goto_next_note                = true;
+#endif
+        if (vibrato || glissando) {
+            // force update on each cycle, since vibrato shifts the frequency slightly
+            goto_next_note = true;
+        }
+        // housekeeping: stop notes that have no playtime left
+        for (int i = 0; i < active_tones; i++) {
+            if ((tones[i].duration != 0xffff)  // indefinitely playing notes, started by 'audio_play_tone'
+                && (tones[i].duration != 0)    // 'uninitialized'
+            ) {
+                if (timer_elapsed(tones[i].time_started) >= tones[i].duration) {
+                    audio_stop_tone(tones[i].pitch);  // also sets 'state_changed=true'
+                }
+            }
+        }
+    }
+    // state-changes have a higher priority, always triggering the hardware to update
+    if (state_changed) {
+        state_changed = false;
+        return true;
+    }
+    return goto_next_note;
+}
+// Tone-multiplexing functions
+#ifdef AUDIO_ENABLE_TONE_MULTIPLEXING
+void audio_set_tone_multiplexing_rate(uint16_t rate) { tone_multiplexing_rate = rate; }
+void audio_enable_tone_multiplexing(void) { tone_multiplexing_rate = AUDIO_TONE_MULTIPLEXING_RATE_DEFAULT; }
+void audio_disable_tone_multiplexing(void) { tone_multiplexing_rate = 0; }
+void audio_increase_tone_multiplexing_rate(uint16_t change) {
+    if ((0xffff - change) > tone_multiplexing_rate) {
+        tone_multiplexing_rate += change;
+    }
+}
+void audio_decrease_tone_multiplexing_rate(uint16_t change) {
+    if (change <= tone_multiplexing_rate) {
+        tone_multiplexing_rate -= change;
+    }
+}
+#endif
+// Tempo functions
+void audio_set_tempo(uint8_t tempo) {
+    if (tempo < 10) note_tempo = 10;
+    //  else if (tempo > 250)
+    //      note_tempo = 250;
+    else
+        note_tempo = tempo;
+}
+void audio_increase_tempo(uint8_t tempo_change) {
+    if (tempo_change > 255 - note_tempo)
+        note_tempo = 255;
+    else
+        note_tempo += tempo_change;
+}
+void audio_decrease_tempo(uint8_t tempo_change) {
+    if (tempo_change >= note_tempo - 10)
+        note_tempo = 10;
+    else
+        note_tempo -= tempo_change;
+}
+// TODO in the int-math version are some bugs; songs sometimes abruptly end - maybe an issue with the timer/system-tick wrapping around?
+uint16_t audio_duration_to_ms(uint16_t duration_bpm) {
+#if defined(__AVR__)
+    // doing int-math saves us some bytes in the overall firmware size, but the intermediate result is less accurate before being cast to/returned as uint
+    return ((uint32_t)duration_bpm * 60 * 1000) / (64 * note_tempo);
+    // NOTE: beware of uint16_t overflows when note_tempo is low and/or the duration is long
+#else
+    return ((float)duration_bpm * 60) / (64 * note_tempo) * 1000;
+#endif
+}
+uint16_t audio_ms_to_duration(uint16_t duration_ms) {
+#if defined(__AVR__)
+    return ((uint32_t)duration_ms * 64 * note_tempo) / 60 / 1000;
+#else
+    return ((float)duration_ms * 64 * note_tempo) / 60 / 1000;
+#endif
+}
diff --git a/quantum/audio/audio.h b/quantum/audio/audio.h
index dccf03d5f..56b9158a1 100644
--- a/quantum/audio/audio.h
+++ b/quantum/audio/audio.h
@@ -1,4 +1,5 @@
-/* Copyright 2016 Jack Humbert
+/* Copyright 2016-2020 Jack Humbert
+ * Copyright 2020 JohSchneider
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
@@ -13,28 +14,30 @@
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 #pragma once
 #include <stdint.h>
 #include <stdbool.h>
-#if defined(__AVR__)
-#    include <avr/io.h>
-#endif
-#include "wait.h"
 #include "musical_notes.h"
 #include "song_list.h"
 #include "voices.h"
 #include "quantum.h"
 #include <math.h>
-// Largely untested PWM audio mode (doesn't sound as good)
+#if defined(__AVR__)
-// #define PWM_AUDIO
+#    include <avr/io.h>
+#    if defined(AUDIO_DRIVER_PWM)
-// #define VIBRATO_ENABLE
+#        include "driver_avr_pwm.h"
+#    endif
+#endif
-// Enable vibrato strength/amplitude - slows down ISR too much
+#if defined(PROTOCOL_CHIBIOS)
-// #define VIBRATO_STRENGTH_ENABLE
+#    if defined(AUDIO_DRIVER_PWM)
+#        include "driver_chibios_pwm.h"
+#    elif defined(AUDIO_DRIVER_DAC)
+#        include "driver_chibios_dac.h"
+#    endif
+#endif
 typedef union {
    uint8_t raw;
@@ -45,62 +48,238 @@ typedef union {
    };
 } audio_config_t;
-bool is_audio_on(void);
+// AVR/LUFA has a MIN, arm/chibios does not
+#ifndef MIN
+#    define MIN(a, b) (((a) < (b)) ? (a) : (b))
+#endif
+/*
+ * a 'musical note' is represented by pitch and duration; a 'musical tone' adds intensity and timbre
+ * https://en.wikipedia.org/wiki/Musical_tone
+ * "A musical tone is characterized by its duration, pitch, intensity (or loudness), and timbre (or quality)"
+ */
+typedef struct {
+    uint16_t time_started;  // timestamp the tone/note was started, system time runs with 1ms resolution -> 16bit timer overflows every ~64 seconds, long enough under normal circumstances; but might be too soon for long-duration notes when the note_tempo is set to a very low value
+    float    pitch;         // aka frequency, in Hz
+    uint16_t duration;      // in ms, converted from the musical_notes.h unit which has 64parts to a beat, factoring in the current tempo in beats-per-minute
+    // float intensity;    // aka volume [0,1] TODO: not used at the moment; pwm drivers can't handle it
+    // uint8_t timbre;     // range: [0,100] TODO: this currently kept track of globally, should we do this per tone instead?
+} musical_tone_t;
+// public interface
+/**
+ * @brief one-time initialization called by quantum/quantum.c
+ * @details usually done lazy, when some tones are to be played
+ *
+ * @post audio system (and hardware) initialized and ready to play tones
+ */
+void audio_init(void);
+void audio_startup(void);
+/**
+ * @brief en-/disable audio output, save this choice to the eeprom
+ */
 void audio_toggle(void);
+/**
+ * @brief enable audio output, save this choice to the eeprom
+ */
 void audio_on(void);
+/**
+ * @brief disable audio output, save this choice to the eeprom
+ */
 void audio_off(void);
+/**
+ * @brief query the if audio output is enabled
+ */
+bool audio_is_on(void);
-// Vibrato rate functions
+/**
+ * @brief start playback of a tone with the given frequency and duration
+ *
+ * @details starts the playback of a given note, which is automatically stopped
+ *          at the the end of its duration = fire&forget
+ *
+ * @param[in] pitch frequency of the tone be played
+ * @param[in] duration in milliseconds, use 'audio_duration_to_ms' to convert
+ *                     from the musical_notes.h unit to ms
+ */
+void audio_play_note(float pitch, uint16_t duration);
+// TODO: audio_play_note(float pitch, uint16_t duration, float intensity, float timbre);
+// audio_play_note_with_instrument ifdef AUDIO_ENABLE_VOICES
-#ifdef VIBRATO_ENABLE
+/**
+ * @brief start playback of a tone with the given frequency
+ *
+ * @details the 'frequency' is put on-top the internal stack of active tones,
+ *          as a new tone with indefinite duration. this tone is played by
+ *          the hardware until a call to 'audio_stop_tone'.
+ *          should a tone with that frequency already be active, its entry
+ *          is put on the top of said internal stack - so no duplicate
+ *          entries are kept.
+ *          'hardware_start' is called upon the first note.
+ *
+ * @param[in] pitch frequency of the tone be played
+ */
+void audio_play_tone(float pitch);
-void set_vibrato_rate(float rate);
+/**
-void increase_vibrato_rate(float change);
+ * @brief stop a given tone/frequency
-void decrease_vibrato_rate(float change);
+ *
+ * @details removes a tone matching the given frequency from the internal
+ *          playback stack
+ *          the hardware is stopped in case this was the last/only frequency
+ *          being played.
+ *
+ * @param[in] pitch tone/frequency to be stopped
+ */
+void audio_stop_tone(float pitch);
-#    ifdef VIBRATO_STRENGTH_ENABLE
+/**
+ * @brief play a melody
+ *
+ * @details starts playback of a melody passed in from a SONG definition - an
+ *          array of {pitch, duration} float-tuples
+ *
+ * @param[in] np note-pointer to the SONG array
+ * @param[in] n_count number of MUSICAL_NOTES of the SONG
+ * @param[in] n_repeat false for onetime, true for looped playback
+ */
+void audio_play_melody(float (*np)[][2], uint16_t n_count, bool n_repeat);
-void set_vibrato_strength(float strength);
+/**
-void increase_vibrato_strength(float change);
+ * @brief play a short tone of a specific frequency to emulate a 'click'
-void decrease_vibrato_strength(float change);
+ *
+ * @details constructs a two-note melody (one pause plus a note) and plays it through
+ *          audio_play_melody. very short durations might not quite work due to
+ *          hardware limitations (DAC: added pulses from zero-crossing feature;...)
+ *
+ * @param[in] delay in milliseconds, length for the pause before the pulses, can be zero
+ * @param[in] pitch
+ * @param[in] duration in milliseconds, length of the 'click'
+ */
+void audio_play_click(uint16_t delay, float pitch, uint16_t duration);
-#    endif
+/**
+ * @brief stops all playback
+ *
+ * @details stops playback of both a melody as well as single tones, resetting
+ *          the internal state
+ */
+void audio_stop_all(void);
-#endif
+/**
+ * @brief query if one/multiple tones are playing
+ */
+bool audio_is_playing_note(void);
-// Polyphony functions
+/**
+ * @brief query if a melody/SONG is playing
+ */
+bool audio_is_playing_melody(void);
-void set_polyphony_rate(float rate);
+// These macros are used to allow audio_play_melody to play an array of indeterminate
-void enable_polyphony(void);
+// length. This works around the limitation of C's sizeof operation on pointers.
-void disable_polyphony(void);
+// The global float array for the song must be used here.
-void increase_polyphony_rate(float change);
+#define NOTE_ARRAY_SIZE(x) ((int16_t)(sizeof(x) / (sizeof(x[0]))))
-void decrease_polyphony_rate(float change);
-void set_timbre(float timbre);
+/**
-void set_tempo(uint8_t tempo);
+ * @brief convenience macro, to play a melody/SONG once
+ */
+#define PLAY_SONG(note_array) audio_play_melody(&note_array, NOTE_ARRAY_SIZE((note_array)), false)
+// TODO: a 'song' is a melody plus singing/vocals -> PLAY_MELODY
+/**
+ * @brief convenience macro, to play a melody/SONG in a loop, until stopped by 'audio_stop_all'
+ */
+#define PLAY_LOOP(note_array) audio_play_melody(&note_array, NOTE_ARRAY_SIZE((note_array)), true)
-void increase_tempo(uint8_t tempo_change);
+// Tone-Multiplexing functions
-void decrease_tempo(uint8_t tempo_change);
+// this feature only makes sense for hardware setups which can't do proper
+// audio-wave synthesis = have no DAC and need to use PWM for tone generation
+#ifdef AUDIO_ENABLE_TONE_MULTIPLEXING
+#    ifndef AUDIO_TONE_MULTIPLEXING_RATE_DEFAULT
+#        define AUDIO_TONE_MULTIPLEXING_RATE_DEFAULT 0
+//       0=off, good starting value is 4; the lower the value the higher the cpu-load
+#    endif
+void audio_set_tone_multiplexing_rate(uint16_t rate);
+void audio_enable_tone_multiplexing(void);
+void audio_disable_tone_multiplexing(void);
+void audio_increase_tone_multiplexing_rate(uint16_t change);
+void audio_decrease_tone_multiplexing_rate(uint16_t change);
+#endif
+// Tempo functions
+void audio_set_tempo(uint8_t tempo);
+void audio_increase_tempo(uint8_t tempo_change);
+void audio_decrease_tempo(uint8_t tempo_change);
+// conversion macros, from 64parts-to-a-beat to milliseconds and back
+uint16_t audio_duration_to_ms(uint16_t duration_bpm);
+uint16_t audio_ms_to_duration(uint16_t duration_ms);
-void audio_init(void);
 void audio_startup(void);
-#ifdef PWM_AUDIO
+// hardware interface
-void play_sample(uint8_t* s, uint16_t l, bool r);
-#endif
-void play_note(float freq, int vol);
-void stop_note(float freq);
-void stop_all_notes(void);
-void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat);
-#define SCALE \
+// implementation in the driver_avr/arm_* respective parts
-    (int8_t[]) { 0 + (12 * 0), 2 + (12 * 0), 4 + (12 * 0), 5 + (12 * 0), 7 + (12 * 0), 9 + (12 * 0), 11 + (12 * 0), 0 + (12 * 1), 2 + (12 * 1), 4 + (12 * 1), 5 + (12 * 1), 7 + (12 * 1), 9 + (12 * 1), 11 + (12 * 1), 0 + (12 * 2), 2 + (12 * 2), 4 + (12 * 2), 5 + (12 * 2), 7 + (12 * 2), 9 + (12 * 2), 11 + (12 * 2), 0 + (12 * 3), 2 + (12 * 3), 4 + (12 * 3), 5 + (12 * 3), 7 + (12 * 3), 9 + (12 * 3), 11 + (12 * 3), 0 + (12 * 4), 2 + (12 * 4), 4 + (12 * 4), 5 + (12 * 4), 7 + (12 * 4), 9 + (12 * 4), 11 + (12 * 4), }
+void audio_driver_initialize(void);
+void audio_driver_start(void);
+void audio_driver_stop(void);
-// These macros are used to allow play_notes to play an array of indeterminate
+/**
-// length. This works around the limitation of C's sizeof operation on pointers.
+ * @brief get the number of currently active tones
-// The global float array for the song must be used here.
+ * @return number, 0=none active
-#define NOTE_ARRAY_SIZE(x) ((int16_t)(sizeof(x) / (sizeof(x[0]))))
+ */
-#define PLAY_SONG(note_array) play_notes(&note_array, NOTE_ARRAY_SIZE((note_array)), false)
+uint8_t audio_get_number_of_active_tones(void);
-#define PLAY_LOOP(note_array) play_notes(&note_array, NOTE_ARRAY_SIZE((note_array)), true)
+/**
+ * @brief access to the raw/unprocessed frequency for a specific tone
+ * @details each active tone has a frequency associated with it, which
+ *          the internal state keeps track of, and is usually influenced
+ *          by various effects
+ * @param[in] tone_index, ranging from 0 to number_of_active_tones-1, with the
+ *            first being the most recent and each increment yielding the next
+ *            older one
+ * @return a positive frequency, in Hz; or zero if the tone is a pause
+ */
+float audio_get_frequency(uint8_t tone_index);
+/**
+ * @brief calculate and return the frequency for the requested tone
+ * @details effects like glissando, vibrato, ... are post-processed onto the
+ *          each active tones 'base'-frequency; this function returns the
+ *          post-processed result.
+ * @param[in] tone_index, ranging from 0 to number_of_active_tones-1, with the
+ *            first being the most recent and each increment yielding the next
+ *            older one
+ * @return a positive frequency, in Hz; or zero if the tone is a pause
+ */
+float audio_get_processed_frequency(uint8_t tone_index);
+/**
+ * @brief   update audio internal state: currently playing and active tones,...
+ * @details This function is intended to be called by the audio-hardware
+ *          specific implementation on a somewhat regular basis while a SONG
+ *          or notes (pitch+duration) are playing to 'advance' the internal
+ *          state (current playing notes, position in the melody, ...)
+ *
+ * @return true if something changed in the currently active tones, which the
+ *         hardware might need to react to
+ */
+bool audio_update_state(void);
+// legacy and back-warts compatibility stuff
+#define is_audio_on() audio_is_on()
+#define is_playing_notes() audio_is_playing_melody()
+#define is_playing_note() audio_is_playing_note()
+#define stop_all_notes() audio_stop_all()
+#define stop_note(f) audio_stop_tone(f)
+#define play_note(f, v) audio_play_tone(f)
-bool is_playing_notes(void);
+#define set_timbre(t) voice_set_timbre(t)
+#define set_tempo(t) audio_set_tempo(t)
+#define increase_tempo(t) audio_increase_tempo(t)
+#define decrease_tempo(t) audio_decrease_tempo(t)
+// vibrato functions are not used in any keyboards
diff --git a/quantum/audio/audio_avr.c b/quantum/audio/audio_avr.c
deleted file mode 100644
index 1bac43bb4..000000000
--- a/quantum/audio/audio_avr.c
+++ /dev/null
@@ -1,812 +0,0 @@
-/* Copyright 2016 Jack Humbert
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-#include <stdio.h>
-#include <string.h>
-//#include <math.h>
-#if defined(__AVR__)
-#    include <avr/pgmspace.h>
-#    include <avr/interrupt.h>
-#    include <avr/io.h>
-#endif
-#include "print.h"
-#include "audio.h"
-#include "keymap.h"
-#include "wait.h"
-#include "eeconfig.h"
-#define CPU_PRESCALER 8
-// -----------------------------------------------------------------------------
-// Timer Abstractions
-// -----------------------------------------------------------------------------
-// Currently we support timers 1 and 3 used at the sime time, channels A-C,
-// pins PB5, PB6, PB7, PC4, PC5, and PC6
-#if defined(C6_AUDIO)
-#    define CPIN_AUDIO
-#    define CPIN_SET_DIRECTION DDRC |= _BV(PORTC6);
-#    define INIT_AUDIO_COUNTER_3 TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
-#    define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3A)
-#    define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3A)
-#    define ENABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A |= _BV(COM3A1);
-#    define DISABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A &= ~(_BV(COM3A1) | _BV(COM3A0));
-#    define TIMER_3_PERIOD ICR3
-#    define TIMER_3_DUTY_CYCLE OCR3A
-#    define TIMER3_AUDIO_vect TIMER3_COMPA_vect
-#endif
-#if defined(C5_AUDIO)
-#    define CPIN_AUDIO
-#    define CPIN_SET_DIRECTION DDRC |= _BV(PORTC5);
-#    define INIT_AUDIO_COUNTER_3 TCCR3A = (0 << COM3B1) | (0 << COM3B0) | (1 << WGM31) | (0 << WGM30);
-#    define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3B)
-#    define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3B)
-#    define ENABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A |= _BV(COM3B1);
-#    define DISABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A &= ~(_BV(COM3B1) | _BV(COM3B0));
-#    define TIMER_3_PERIOD ICR3
-#    define TIMER_3_DUTY_CYCLE OCR3B
-#    define TIMER3_AUDIO_vect TIMER3_COMPB_vect
-#endif
-#if defined(C4_AUDIO)
-#    define CPIN_AUDIO
-#    define CPIN_SET_DIRECTION DDRC |= _BV(PORTC4);
-#    define INIT_AUDIO_COUNTER_3 TCCR3A = (0 << COM3C1) | (0 << COM3C0) | (1 << WGM31) | (0 << WGM30);
-#    define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3C)
-#    define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3C)
-#    define ENABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A |= _BV(COM3C1);
-#    define DISABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A &= ~(_BV(COM3C1) | _BV(COM3C0));
-#    define TIMER_3_PERIOD ICR3
-#    define TIMER_3_DUTY_CYCLE OCR3C
-#    define TIMER3_AUDIO_vect TIMER3_COMPC_vect
-#endif
-#if defined(B5_AUDIO)
-#    define BPIN_AUDIO
-#    define BPIN_SET_DIRECTION DDRB |= _BV(PORTB5);
-#    define INIT_AUDIO_COUNTER_1 TCCR1A = (0 << COM1A1) | (0 << COM1A0) | (1 << WGM11) | (0 << WGM10);
-#    define ENABLE_AUDIO_COUNTER_1_ISR TIMSK1 |= _BV(OCIE1A)
-#    define DISABLE_AUDIO_COUNTER_1_ISR TIMSK1 &= ~_BV(OCIE1A)
-#    define ENABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A |= _BV(COM1A1);
-#    define DISABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A &= ~(_BV(COM1A1) | _BV(COM1A0));
-#    define TIMER_1_PERIOD ICR1
-#    define TIMER_1_DUTY_CYCLE OCR1A
-#    define TIMER1_AUDIO_vect TIMER1_COMPA_vect
-#endif
-#if defined(B6_AUDIO)
-#    define BPIN_AUDIO
-#    define BPIN_SET_DIRECTION DDRB |= _BV(PORTB6);
-#    define INIT_AUDIO_COUNTER_1 TCCR1A = (0 << COM1B1) | (0 << COM1B0) | (1 << WGM11) | (0 << WGM10);
-#    define ENABLE_AUDIO_COUNTER_1_ISR TIMSK1 |= _BV(OCIE1B)
-#    define DISABLE_AUDIO_COUNTER_1_ISR TIMSK1 &= ~_BV(OCIE1B)
-#    define ENABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A |= _BV(COM1B1);
-#    define DISABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A &= ~(_BV(COM1B1) | _BV(COM1B0));
-#    define TIMER_1_PERIOD ICR1
-#    define TIMER_1_DUTY_CYCLE OCR1B
-#    define TIMER1_AUDIO_vect TIMER1_COMPB_vect
-#endif
-#if defined(B7_AUDIO)
-#    define BPIN_AUDIO
-#    define BPIN_SET_DIRECTION DDRB |= _BV(PORTB7);
-#    define INIT_AUDIO_COUNTER_1 TCCR1A = (0 << COM1C1) | (0 << COM1C0) | (1 << WGM11) | (0 << WGM10);
-#    define ENABLE_AUDIO_COUNTER_1_ISR TIMSK1 |= _BV(OCIE1C)
-#    define DISABLE_AUDIO_COUNTER_1_ISR TIMSK1 &= ~_BV(OCIE1C)
-#    define ENABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A |= _BV(COM1C1);
-#    define DISABLE_AUDIO_COUNTER_1_OUTPUT TCCR1A &= ~(_BV(COM1C1) | _BV(COM1C0));
-#    define TIMER_1_PERIOD ICR1
-#    define TIMER_1_DUTY_CYCLE OCR1C
-#    define TIMER1_AUDIO_vect TIMER1_COMPC_vect
-#endif
-#if !defined(BPIN_AUDIO) && !defined(CPIN_AUDIO)
-#    error "Audio feature enabled, but no suitable pin selected - see docs/feature_audio.md under the AVR settings for available options."
-#endif
-// -----------------------------------------------------------------------------
-int   voices        = 0;
-int   voice_place   = 0;
-float frequency     = 0;
-float frequency_alt = 0;
-int   volume        = 0;
-long  position      = 0;
-float frequencies[8] = {0, 0, 0, 0, 0, 0, 0, 0};
-int   volumes[8]     = {0, 0, 0, 0, 0, 0, 0, 0};
-bool  sliding        = false;
-float place = 0;
-uint8_t* sample;
-uint16_t sample_length = 0;
-bool     playing_notes  = false;
-bool     playing_note   = false;
-float    note_frequency = 0;
-float    note_length    = 0;
-uint8_t  note_tempo     = TEMPO_DEFAULT;
-float    note_timbre    = TIMBRE_DEFAULT;
-uint16_t note_position  = 0;
-float (*notes_pointer)[][2];
-uint16_t notes_count;
-bool     notes_repeat;
-bool     note_resting = false;
-uint16_t current_note = 0;
-uint8_t  rest_counter = 0;
-#ifdef VIBRATO_ENABLE
-float vibrato_counter  = 0;
-float vibrato_strength = .5;
-float vibrato_rate     = 0.125;
-#endif
-float polyphony_rate = 0;
-static bool audio_initialized = false;
-audio_config_t audio_config;
-uint16_t envelope_index = 0;
-bool     glissando      = true;
-#ifndef STARTUP_SONG
-#    define STARTUP_SONG SONG(STARTUP_SOUND)
-#endif
-#ifndef AUDIO_ON_SONG
-#    define AUDIO_ON_SONG SONG(AUDIO_ON_SOUND)
-#endif
-#ifndef AUDIO_OFF_SONG
-#    define AUDIO_OFF_SONG SONG(AUDIO_OFF_SOUND)
-#endif
-float startup_song[][2]   = STARTUP_SONG;
-float audio_on_song[][2]  = AUDIO_ON_SONG;
-float audio_off_song[][2] = AUDIO_OFF_SONG;
-void audio_init() {
-    // Check EEPROM
-    if (!eeconfig_is_enabled()) {
-        eeconfig_init();
-    }
-    audio_config.raw = eeconfig_read_audio();
-    if (!audio_initialized) {
-// Set audio ports as output
-#ifdef CPIN_AUDIO
-        CPIN_SET_DIRECTION
-        DISABLE_AUDIO_COUNTER_3_ISR;
-#endif
-#ifdef BPIN_AUDIO
-        BPIN_SET_DIRECTION
-        DISABLE_AUDIO_COUNTER_1_ISR;
-#endif
-// TCCR3A / TCCR3B: Timer/Counter #3 Control Registers TCCR3A/TCCR3B, TCCR1A/TCCR1B
-// Compare Output Mode (COM3An and COM1An) = 0b00 = Normal port operation
-//   OC3A -- PC6
-//   OC3B -- PC5
-//   OC3C -- PC4
-//   OC1A -- PB5
-//   OC1B -- PB6
-//   OC1C -- PB7
-// Waveform Generation Mode (WGM3n) = 0b1110 = Fast PWM Mode 14. Period = ICR3, Duty Cycle OCR3A)
-//   OCR3A - PC6
-//   OCR3B - PC5
-//   OCR3C - PC4
-//   OCR1A - PB5
-//   OCR1B - PB6
-//   OCR1C - PB7
-// Clock Select (CS3n) = 0b010 = Clock / 8
-#ifdef CPIN_AUDIO
-        INIT_AUDIO_COUNTER_3
-        TCCR3B             = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30);
-        TIMER_3_PERIOD     = (uint16_t)(((float)F_CPU) / (440 * CPU_PRESCALER));
-        TIMER_3_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (440 * CPU_PRESCALER)) * note_timbre);
-#endif
-#ifdef BPIN_AUDIO
-        INIT_AUDIO_COUNTER_1
-        TCCR1B             = (1 << WGM13) | (1 << WGM12) | (0 << CS12) | (1 << CS11) | (0 << CS10);
-        TIMER_1_PERIOD     = (uint16_t)(((float)F_CPU) / (440 * CPU_PRESCALER));
-        TIMER_1_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (440 * CPU_PRESCALER)) * note_timbre);
-#endif
-        audio_initialized = true;
-    }
-}
-void audio_startup() {
-    if (audio_config.enable) {
-        PLAY_SONG(startup_song);
-    }
-}
-void stop_all_notes() {
-    dprintf("audio stop all notes");
-    if (!audio_initialized) {
-        audio_init();
-    }
-    voices = 0;
-#ifdef CPIN_AUDIO
-    DISABLE_AUDIO_COUNTER_3_ISR;
-    DISABLE_AUDIO_COUNTER_3_OUTPUT;
-#endif
-#ifdef BPIN_AUDIO
-    DISABLE_AUDIO_COUNTER_1_ISR;
-    DISABLE_AUDIO_COUNTER_1_OUTPUT;
-#endif
-    playing_notes = false;
-    playing_note  = false;
-    frequency     = 0;
-    frequency_alt = 0;
-    volume        = 0;
-    for (uint8_t i = 0; i < 8; i++) {
-        frequencies[i] = 0;
-        volumes[i]     = 0;
-    }
-}
-void stop_note(float freq) {
-    dprintf("audio stop note freq=%d", (int)freq);
-    if (playing_note) {
-        if (!audio_initialized) {
-            audio_init();
-        }
-        for (int i = 7; i >= 0; i--) {
-            if (frequencies[i] == freq) {
-                frequencies[i] = 0;
-                volumes[i]     = 0;
-                for (int j = i; (j < 7); j++) {
-                    frequencies[j]     = frequencies[j + 1];
-                    frequencies[j + 1] = 0;
-                    volumes[j]         = volumes[j + 1];
-                    volumes[j + 1]     = 0;
-                }
-                break;
-            }
-        }
-        voices--;
-        if (voices < 0) voices = 0;
-        if (voice_place >= voices) {
-            voice_place = 0;
-        }
-        if (voices == 0) {
-#ifdef CPIN_AUDIO
-            DISABLE_AUDIO_COUNTER_3_ISR;
-            DISABLE_AUDIO_COUNTER_3_OUTPUT;
-#endif
-#ifdef BPIN_AUDIO
-            DISABLE_AUDIO_COUNTER_1_ISR;
-            DISABLE_AUDIO_COUNTER_1_OUTPUT;
-#endif
-            frequency     = 0;
-            frequency_alt = 0;
-            volume        = 0;
-            playing_note  = false;
-        }
-    }
-}
-#ifdef VIBRATO_ENABLE
-float mod(float a, int b) {
-    float r = fmod(a, b);
-    return r < 0 ? r + b : r;
-}
-float vibrato(float average_freq) {
-#    ifdef VIBRATO_STRENGTH_ENABLE
-    float vibrated_freq = average_freq * pow(vibrato_lut[(int)vibrato_counter], vibrato_strength);
-#    else
-    float vibrated_freq = average_freq * vibrato_lut[(int)vibrato_counter];
-#    endif
-    vibrato_counter = mod((vibrato_counter + vibrato_rate * (1.0 + 440.0 / average_freq)), VIBRATO_LUT_LENGTH);
-    return vibrated_freq;
-}
-#endif
-#ifdef CPIN_AUDIO
-ISR(TIMER3_AUDIO_vect) {
-    float freq;
-    if (playing_note) {
-        if (voices > 0) {
-#    ifdef BPIN_AUDIO
-            float freq_alt = 0;
-            if (voices > 1) {
-                if (polyphony_rate == 0) {
-                    if (glissando) {
-                        if (frequency_alt != 0 && frequency_alt < frequencies[voices - 2] && frequency_alt < frequencies[voices - 2] * pow(2, -440 / frequencies[voices - 2] / 12 / 2)) {
-                            frequency_alt = frequency_alt * pow(2, 440 / frequency_alt / 12 / 2);
-                        } else if (frequency_alt != 0 && frequency_alt > frequencies[voices - 2] && frequency_alt > frequencies[voices - 2] * pow(2, 440 / frequencies[voices - 2] / 12 / 2)) {
-                            frequency_alt = frequency_alt * pow(2, -440 / frequency_alt / 12 / 2);
-                        } else {
-                            frequency_alt = frequencies[voices - 2];
-                        }
-                    } else {
-                        frequency_alt = frequencies[voices - 2];
-                    }
-#        ifdef VIBRATO_ENABLE
-                    if (vibrato_strength > 0) {
-                        freq_alt = vibrato(frequency_alt);
-                    } else {
-                        freq_alt = frequency_alt;
-                    }
-#        else
-                    freq_alt = frequency_alt;
-#        endif
-                }
-                if (envelope_index < 65535) {
-                    envelope_index++;
-                }
-                freq_alt = voice_envelope(freq_alt);
-                if (freq_alt < 30.517578125) {
-                    freq_alt = 30.52;
-                }
-                TIMER_1_PERIOD     = (uint16_t)(((float)F_CPU) / (freq_alt * CPU_PRESCALER));
-                TIMER_1_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq_alt * CPU_PRESCALER)) * note_timbre);
-            }
-#    endif
-            if (polyphony_rate > 0) {
-                if (voices > 1) {
-                    voice_place %= voices;
-                    if (place++ > (frequencies[voice_place] / polyphony_rate / CPU_PRESCALER)) {
-                        voice_place = (voice_place + 1) % voices;
-                        place       = 0.0;
-                    }
-                }
-#    ifdef VIBRATO_ENABLE
-                if (vibrato_strength > 0) {
-                    freq = vibrato(frequencies[voice_place]);
-                } else {
-                    freq = frequencies[voice_place];
-                }
-#    else
-                freq = frequencies[voice_place];
-#    endif
-            } else {
-                if (glissando) {
-                    if (frequency != 0 && frequency < frequencies[voices - 1] && frequency < frequencies[voices - 1] * pow(2, -440 / frequencies[voices - 1] / 12 / 2)) {
-                        frequency = frequency * pow(2, 440 / frequency / 12 / 2);
-                    } else if (frequency != 0 && frequency > frequencies[voices - 1] && frequency > frequencies[voices - 1] * pow(2, 440 / frequencies[voices - 1] / 12 / 2)) {
-                        frequency = frequency * pow(2, -440 / frequency / 12 / 2);
-                    } else {
-                        frequency = frequencies[voices - 1];
-                    }
-                } else {
-                    frequency = frequencies[voices - 1];
-                }
-#    ifdef VIBRATO_ENABLE
-                if (vibrato_strength > 0) {
-                    freq = vibrato(frequency);
-                } else {
-                    freq = frequency;
-                }
-#    else
-                freq = frequency;
-#    endif
-            }
-            if (envelope_index < 65535) {
-                envelope_index++;
-            }
-            freq = voice_envelope(freq);
-            if (freq < 30.517578125) {
-                freq = 30.52;
-            }
-            TIMER_3_PERIOD     = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
-            TIMER_3_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);
-        }
-    }
-    if (playing_notes) {
-        if (note_frequency > 0) {
-#    ifdef VIBRATO_ENABLE
-            if (vibrato_strength > 0) {
-                freq = vibrato(note_frequency);
-            } else {
-                freq = note_frequency;
-            }
-#    else
-            freq = note_frequency;
-#    endif
-            if (envelope_index < 65535) {
-                envelope_index++;
-            }
-            freq = voice_envelope(freq);
-            TIMER_3_PERIOD     = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
-            TIMER_3_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);
-        } else {
-            TIMER_3_PERIOD     = 0;
-            TIMER_3_DUTY_CYCLE = 0;
-        }
-        note_position++;
-        bool end_of_note = false;
-        if (TIMER_3_PERIOD > 0) {
-            if (!note_resting)
-                end_of_note = (note_position >= (note_length / TIMER_3_PERIOD * 0xFFFF - 1));
-            else
-                end_of_note = (note_position >= (note_length));
-        } else {
-            end_of_note = (note_position >= (note_length));
-        }
-        if (end_of_note) {
-            current_note++;
-            if (current_note >= notes_count) {
-                if (notes_repeat) {
-                    current_note = 0;
-                } else {
-                    DISABLE_AUDIO_COUNTER_3_ISR;
-                    DISABLE_AUDIO_COUNTER_3_OUTPUT;
-                    playing_notes = false;
-                    return;
-                }
-            }
-            if (!note_resting) {
-                note_resting = true;
-                current_note--;
-                if ((*notes_pointer)[current_note][0] == (*notes_pointer)[current_note + 1][0]) {
-                    note_frequency = 0;
-                    note_length    = 1;
-                } else {
-                    note_frequency = (*notes_pointer)[current_note][0];
-                    note_length    = 1;
-                }
-            } else {
-                note_resting   = false;
-                envelope_index = 0;
-                note_frequency = (*notes_pointer)[current_note][0];
-                note_length    = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
-            }
-            note_position = 0;
-        }
-    }
-    if (!audio_config.enable) {
-        playing_notes = false;
-        playing_note  = false;
-    }
-}
-#endif
-#ifdef BPIN_AUDIO
-ISR(TIMER1_AUDIO_vect) {
-#    if defined(BPIN_AUDIO) && !defined(CPIN_AUDIO)
-    float freq = 0;
-    if (playing_note) {
-        if (voices > 0) {
-            if (polyphony_rate > 0) {
-                if (voices > 1) {
-                    voice_place %= voices;
-                    if (place++ > (frequencies[voice_place] / polyphony_rate / CPU_PRESCALER)) {
-                        voice_place = (voice_place + 1) % voices;
-                        place       = 0.0;
-                    }
-                }
-#        ifdef VIBRATO_ENABLE
-                if (vibrato_strength > 0) {
-                    freq = vibrato(frequencies[voice_place]);
-                } else {
-                    freq = frequencies[voice_place];
-                }
-#        else
-                freq = frequencies[voice_place];
-#        endif
-            } else {
-                if (glissando) {
-                    if (frequency != 0 && frequency < frequencies[voices - 1] && frequency < frequencies[voices - 1] * pow(2, -440 / frequencies[voices - 1] / 12 / 2)) {
-                        frequency = frequency * pow(2, 440 / frequency / 12 / 2);
-                    } else if (frequency != 0 && frequency > frequencies[voices - 1] && frequency > frequencies[voices - 1] * pow(2, 440 / frequencies[voices - 1] / 12 / 2)) {
-                        frequency = frequency * pow(2, -440 / frequency / 12 / 2);
-                    } else {
-                        frequency = frequencies[voices - 1];
-                    }
-                } else {
-                    frequency = frequencies[voices - 1];
-                }
-#        ifdef VIBRATO_ENABLE
-                if (vibrato_strength > 0) {
-                    freq = vibrato(frequency);
-                } else {
-                    freq = frequency;
-                }
-#        else
-                freq = frequency;
-#        endif
-            }
-            if (envelope_index < 65535) {
-                envelope_index++;
-            }
-            freq = voice_envelope(freq);
-            if (freq < 30.517578125) {
-                freq = 30.52;
-            }
-            TIMER_1_PERIOD     = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
-            TIMER_1_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);
-        }
-    }
-    if (playing_notes) {
-        if (note_frequency > 0) {
-#        ifdef VIBRATO_ENABLE
-            if (vibrato_strength > 0) {
-                freq = vibrato(note_frequency);
-            } else {
-                freq = note_frequency;
-            }
-#        else
-            freq = note_frequency;
-#        endif
-            if (envelope_index < 65535) {
-                envelope_index++;
-            }
-            freq = voice_envelope(freq);
-            TIMER_1_PERIOD     = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
-            TIMER_1_DUTY_CYCLE = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);
-        } else {
-            TIMER_1_PERIOD     = 0;
-            TIMER_1_DUTY_CYCLE = 0;
-        }
-        note_position++;
-        bool end_of_note = false;
-        if (TIMER_1_PERIOD > 0) {
-            if (!note_resting)
-                end_of_note = (note_position >= (note_length / TIMER_1_PERIOD * 0xFFFF - 1));
-            else
-                end_of_note = (note_position >= (note_length));
-        } else {
-            end_of_note = (note_position >= (note_length));
-        }
-        if (end_of_note) {
-            current_note++;
-            if (current_note >= notes_count) {
-                if (notes_repeat) {
-                    current_note = 0;
-                } else {
-                    DISABLE_AUDIO_COUNTER_1_ISR;
-                    DISABLE_AUDIO_COUNTER_1_OUTPUT;
-                    playing_notes = false;
-                    return;
-                }
-            }
-            if (!note_resting) {
-                note_resting = true;
-                current_note--;
-                if ((*notes_pointer)[current_note][0] == (*notes_pointer)[current_note + 1][0]) {
-                    note_frequency = 0;
-                    note_length    = 1;
-                } else {
-                    note_frequency = (*notes_pointer)[current_note][0];
-                    note_length    = 1;
-                }
-            } else {
-                note_resting   = false;
-                envelope_index = 0;
-                note_frequency = (*notes_pointer)[current_note][0];
-                note_length    = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
-            }
-            note_position = 0;
-        }
-    }
-    if (!audio_config.enable) {
-        playing_notes = false;
-        playing_note  = false;
-    }
-#    endif
-}
-#endif
-void play_note(float freq, int vol) {
-    dprintf("audio play note freq=%d vol=%d", (int)freq, vol);
-    if (!audio_initialized) {
-        audio_init();
-    }
-    if (audio_config.enable && voices < 8) {
-#ifdef CPIN_AUDIO
-        DISABLE_AUDIO_COUNTER_3_ISR;
-#endif
-#ifdef BPIN_AUDIO
-        DISABLE_AUDIO_COUNTER_1_ISR;
-#endif
-        // Cancel notes if notes are playing
-        if (playing_notes) stop_all_notes();
-        playing_note = true;
-        envelope_index = 0;
-        if (freq > 0) {
-            frequencies[voices] = freq;
-            volumes[voices]     = vol;
-            voices++;
-        }
-#ifdef CPIN_AUDIO
-        ENABLE_AUDIO_COUNTER_3_ISR;
-        ENABLE_AUDIO_COUNTER_3_OUTPUT;
-#endif
-#ifdef BPIN_AUDIO
-#    ifdef CPIN_AUDIO
-        if (voices > 1) {
-            ENABLE_AUDIO_COUNTER_1_ISR;
-            ENABLE_AUDIO_COUNTER_1_OUTPUT;
-        }
-#    else
-        ENABLE_AUDIO_COUNTER_1_ISR;
-        ENABLE_AUDIO_COUNTER_1_OUTPUT;
-#    endif
-#endif
-    }
-}
-void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat) {
-    if (!audio_initialized) {
-        audio_init();
-    }
-    if (audio_config.enable) {
-#ifdef CPIN_AUDIO
-        DISABLE_AUDIO_COUNTER_3_ISR;
-#endif
-#ifdef BPIN_AUDIO
-        DISABLE_AUDIO_COUNTER_1_ISR;
-#endif
-        // Cancel note if a note is playing
-        if (playing_note) stop_all_notes();
-        playing_notes = true;
-        notes_pointer = np;
-        notes_count   = n_count;
-        notes_repeat  = n_repeat;
-        place        = 0;
-        current_note = 0;
-        note_frequency = (*notes_pointer)[current_note][0];
-        note_length    = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
-        note_position  = 0;
-#ifdef CPIN_AUDIO
-        ENABLE_AUDIO_COUNTER_3_ISR;
-        ENABLE_AUDIO_COUNTER_3_OUTPUT;
-#endif
-#ifdef BPIN_AUDIO
-#    ifndef CPIN_AUDIO
-        ENABLE_AUDIO_COUNTER_1_ISR;
-        ENABLE_AUDIO_COUNTER_1_OUTPUT;
-#    endif
-#endif
-    }
-}
-bool is_playing_notes(void) { return playing_notes; }
-bool is_audio_on(void) { return (audio_config.enable != 0); }
-void audio_toggle(void) {
-    audio_config.enable ^= 1;
-    eeconfig_update_audio(audio_config.raw);
-    if (audio_config.enable) audio_on_user();
-}
-void audio_on(void) {
-    audio_config.enable = 1;
-    eeconfig_update_audio(audio_config.raw);
-    audio_on_user();
-    PLAY_SONG(audio_on_song);
-}
-void audio_off(void) {
-    PLAY_SONG(audio_off_song);
-    wait_ms(100);
-    stop_all_notes();
-    audio_config.enable = 0;
-    eeconfig_update_audio(audio_config.raw);
-}
-#ifdef VIBRATO_ENABLE
-// Vibrato rate functions
-void set_vibrato_rate(float rate) { vibrato_rate = rate; }
-void increase_vibrato_rate(float change) { vibrato_rate *= change; }
-void decrease_vibrato_rate(float change) { vibrato_rate /= change; }
-#    ifdef VIBRATO_STRENGTH_ENABLE
-void set_vibrato_strength(float strength) { vibrato_strength = strength; }
-void increase_vibrato_strength(float change) { vibrato_strength *= change; }
-void decrease_vibrato_strength(float change) { vibrato_strength /= change; }
-#    endif /* VIBRATO_STRENGTH_ENABLE */
-#endif /* VIBRATO_ENABLE */
-// Polyphony functions
-void set_polyphony_rate(float rate) { polyphony_rate = rate; }
-void enable_polyphony() { polyphony_rate = 5; }
-void disable_polyphony() { polyphony_rate = 0; }
-void increase_polyphony_rate(float change) { polyphony_rate *= change; }
-void decrease_polyphony_rate(float change) { polyphony_rate /= change; }
-// Timbre function
-void set_timbre(float timbre) { note_timbre = timbre; }
-// Tempo functions
-void set_tempo(uint8_t tempo) { note_tempo = tempo; }
-void decrease_tempo(uint8_t tempo_change) { note_tempo += tempo_change; }
-void increase_tempo(uint8_t tempo_change) {
-    if (note_tempo - tempo_change < 10) {
-        note_tempo = 10;
-    } else {
-        note_tempo -= tempo_change;
-    }
-}
diff --git a/quantum/audio/audio_chibios.c b/quantum/audio/audio_chibios.c
deleted file mode 100644
index b267e5746..000000000
--- a/quantum/audio/audio_chibios.c
+++ /dev/null
@@ -1,721 +0,0 @@
-/* Copyright 2016 Jack Humbert
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-#include "audio.h"
-#include <ch.h>
-#include <hal.h>
-#include <string.h>
-#include "print.h"
-#include "keymap.h"
-#include "eeconfig.h"
-// -----------------------------------------------------------------------------
-int   voices        = 0;
-int   voice_place   = 0;
-float frequency     = 0;
-float frequency_alt = 0;
-int   volume        = 0;
-long  position      = 0;
-float frequencies[8] = {0, 0, 0, 0, 0, 0, 0, 0};
-int   volumes[8]     = {0, 0, 0, 0, 0, 0, 0, 0};
-bool  sliding        = false;
-float place = 0;
-uint8_t *sample;
-uint16_t sample_length = 0;
-bool     playing_notes  = false;
-bool     playing_note   = false;
-float    note_frequency = 0;
-float    note_length    = 0;
-uint8_t  note_tempo     = TEMPO_DEFAULT;
-float    note_timbre    = TIMBRE_DEFAULT;
-uint16_t note_position  = 0;
-float (*notes_pointer)[][2];
-uint16_t notes_count;
-bool     notes_repeat;
-bool     note_resting = false;
-uint16_t current_note = 0;
-uint8_t  rest_counter = 0;
-#ifdef VIBRATO_ENABLE
-float vibrato_counter  = 0;
-float vibrato_strength = .5;
-float vibrato_rate     = 0.125;
-#endif
-float polyphony_rate = 0;
-static bool audio_initialized = false;
-audio_config_t audio_config;
-uint16_t envelope_index = 0;
-bool     glissando      = true;
-#ifndef STARTUP_SONG
-#    define STARTUP_SONG SONG(STARTUP_SOUND)
-#endif
-float startup_song[][2] = STARTUP_SONG;
-static void gpt_cb8(GPTDriver *gptp);
-#define DAC_BUFFER_SIZE 100
-#ifndef DAC_SAMPLE_MAX
-#    define DAC_SAMPLE_MAX 65535U
-#endif
-#define START_CHANNEL_1()           \
-    gptStart(&GPTD6, &gpt6cfg1);    \
-    gptStartContinuous(&GPTD6, 2U); \
-    palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_ANALOG)
-#define START_CHANNEL_2()           \
-    gptStart(&GPTD7, &gpt7cfg1);    \
-    gptStartContinuous(&GPTD7, 2U); \
-    palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_ANALOG)
-#define STOP_CHANNEL_1()                               \
-    gptStopTimer(&GPTD6);                              \
-    palSetPadMode(GPIOA, 4, PAL_MODE_OUTPUT_PUSHPULL); \
-    palSetPad(GPIOA, 4)
-#define STOP_CHANNEL_2()                               \
-    gptStopTimer(&GPTD7);                              \
-    palSetPadMode(GPIOA, 5, PAL_MODE_OUTPUT_PUSHPULL); \
-    palSetPad(GPIOA, 5)
-#define RESTART_CHANNEL_1() \
-    STOP_CHANNEL_1();       \
-    START_CHANNEL_1()
-#define RESTART_CHANNEL_2() \
-    STOP_CHANNEL_2();       \
-    START_CHANNEL_2()
-#define UPDATE_CHANNEL_1_FREQ(freq)              \
-    gpt6cfg1.frequency = freq * DAC_BUFFER_SIZE; \
-    RESTART_CHANNEL_1()
-#define UPDATE_CHANNEL_2_FREQ(freq)              \
-    gpt7cfg1.frequency = freq * DAC_BUFFER_SIZE; \
-    RESTART_CHANNEL_2()
-#define GET_CHANNEL_1_FREQ (uint16_t)(gpt6cfg1.frequency * DAC_BUFFER_SIZE)
-#define GET_CHANNEL_2_FREQ (uint16_t)(gpt7cfg1.frequency * DAC_BUFFER_SIZE)
-/*
- * GPT6 configuration.
- */
-// static const GPTConfig gpt6cfg1 = {
-//   .frequency    = 1000000U,
-//   .callback     = NULL,
-//   .cr2          = TIM_CR2_MMS_1,    /* MMS = 010 = TRGO on Update Event.    */
-//   .dier         = 0U
-// };
-GPTConfig gpt6cfg1 = {.frequency = 440U * DAC_BUFFER_SIZE,
-                      .callback  = NULL,
-                      .cr2       = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event.    */
-                      .dier      = 0U};
-GPTConfig gpt7cfg1 = {.frequency = 440U * DAC_BUFFER_SIZE,
-                      .callback  = NULL,
-                      .cr2       = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event.    */
-                      .dier      = 0U};
-GPTConfig gpt8cfg1 = {.frequency = 10,
-                      .callback  = gpt_cb8,
-                      .cr2       = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event.    */
-                      .dier      = 0U};
-/*
- * DAC test buffer (sine wave).
- */
-// static const dacsample_t dac_buffer[DAC_BUFFER_SIZE] = {
-//   2047, 2082, 2118, 2154, 2189, 2225, 2260, 2296, 2331, 2367, 2402, 2437,
-//   2472, 2507, 2542, 2576, 2611, 2645, 2679, 2713, 2747, 2780, 2813, 2846,
-//   2879, 2912, 2944, 2976, 3008, 3039, 3070, 3101, 3131, 3161, 3191, 3221,
-//   3250, 3278, 3307, 3335, 3362, 3389, 3416, 3443, 3468, 3494, 3519, 3544,
-//   3568, 3591, 3615, 3637, 3660, 3681, 3703, 3723, 3744, 3763, 3782, 3801,
-//   3819, 3837, 3854, 3870, 3886, 3902, 3917, 3931, 3944, 3958, 3970, 3982,
-//   3993, 4004, 4014, 4024, 4033, 4041, 4049, 4056, 4062, 4068, 4074, 4078,
-//   4082, 4086, 4089, 4091, 4092, 4093, 4094, 4093, 4092, 4091, 4089, 4086,
-//   4082, 4078, 4074, 4068, 4062, 4056, 4049, 4041, 4033, 4024, 4014, 4004,
-//   3993, 3982, 3970, 3958, 3944, 3931, 3917, 3902, 3886, 3870, 3854, 3837,
-//   3819, 3801, 3782, 3763, 3744, 3723, 3703, 3681, 3660, 3637, 3615, 3591,
-//   3568, 3544, 3519, 3494, 3468, 3443, 3416, 3389, 3362, 3335, 3307, 3278,
-//   3250, 3221, 3191, 3161, 3131, 3101, 3070, 3039, 3008, 2976, 2944, 2912,
-//   2879, 2846, 2813, 2780, 2747, 2713, 2679, 2645, 2611, 2576, 2542, 2507,
-//   2472, 2437, 2402, 2367, 2331, 2296, 2260, 2225, 2189, 2154, 2118, 2082,
-//   2047, 2012, 1976, 1940, 1905, 1869, 1834, 1798, 1763, 1727, 1692, 1657,
-//   1622, 1587, 1552, 1518, 1483, 1449, 1415, 1381, 1347, 1314, 1281, 1248,
-//   1215, 1182, 1150, 1118, 1086, 1055, 1024,  993,  963,  933,  903,  873,
-//    844,  816,  787,  759,  732,  705,  678,  651,  626,  600,  575,  550,
-//    526,  503,  479,  457,  434,  413,  391,  371,  350,  331,  312,  293,
-//    275,  257,  240,  224,  208,  192,  177,  163,  150,  136,  124,  112,
-//    101,   90,   80,   70,   61,   53,   45,   38,   32,   26,   20,   16,
-//     12,    8,    5,    3,    2,    1,    0,    1,    2,    3,    5,    8,
-//     12,   16,   20,   26,   32,   38,   45,   53,   61,   70,   80,   90,
-//    101,  112,  124,  136,  150,  163,  177,  192,  208,  224,  240,  257,
-//    275,  293,  312,  331,  350,  371,  391,  413,  434,  457,  479,  503,
-//    526,  550,  575,  600,  626,  651,  678,  705,  732,  759,  787,  816,
-//    844,  873,  903,  933,  963,  993, 1024, 1055, 1086, 1118, 1150, 1182,
-//   1215, 1248, 1281, 1314, 1347, 1381, 1415, 1449, 1483, 1518, 1552, 1587,
-//   1622, 1657, 1692, 1727, 1763, 1798, 1834, 1869, 1905, 1940, 1976, 2012
-// };
-// static const dacsample_t dac_buffer_2[DAC_BUFFER_SIZE] = {
-//     12,    8,    5,    3,    2,    1,    0,    1,    2,    3,    5,    8,
-//     12,   16,   20,   26,   32,   38,   45,   53,   61,   70,   80,   90,
-//    101,  112,  124,  136,  150,  163,  177,  192,  208,  224,  240,  257,
-//    275,  293,  312,  331,  350,  371,  391,  413,  434,  457,  479,  503,
-//    526,  550,  575,  600,  626,  651,  678,  705,  732,  759,  787,  816,
-//    844,  873,  903,  933,  963,  993, 1024, 1055, 1086, 1118, 1150, 1182,
-//   1215, 1248, 1281, 1314, 1347, 1381, 1415, 1449, 1483, 1518, 1552, 1587,
-//   1622, 1657, 1692, 1727, 1763, 1798, 1834, 1869, 1905, 1940, 1976, 2012,
-//   2047, 2082, 2118, 2154, 2189, 2225, 2260, 2296, 2331, 2367, 2402, 2437,
-//   2472, 2507, 2542, 2576, 2611, 2645, 2679, 2713, 2747, 2780, 2813, 2846,
-//   2879, 2912, 2944, 2976, 3008, 3039, 3070, 3101, 3131, 3161, 3191, 3221,
-//   3250, 3278, 3307, 3335, 3362, 3389, 3416, 3443, 3468, 3494, 3519, 3544,
-//   3568, 3591, 3615, 3637, 3660, 3681, 3703, 3723, 3744, 3763, 3782, 3801,
-//   3819, 3837, 3854, 3870, 3886, 3902, 3917, 3931, 3944, 3958, 3970, 3982,
-//   3993, 4004, 4014, 4024, 4033, 4041, 4049, 4056, 4062, 4068, 4074, 4078,
-//   4082, 4086, 4089, 4091, 4092, 4093, 4094, 4093, 4092, 4091, 4089, 4086,
-//   4082, 4078, 4074, 4068, 4062, 4056, 4049, 4041, 4033, 4024, 4014, 4004,
-//   3993, 3982, 3970, 3958, 3944, 3931, 3917, 3902, 3886, 3870, 3854, 3837,
-//   3819, 3801, 3782, 3763, 3744, 3723, 3703, 3681, 3660, 3637, 3615, 3591,
-//   3568, 3544, 3519, 3494, 3468, 3443, 3416, 3389, 3362, 3335, 3307, 3278,
-//   3250, 3221, 3191, 3161, 3131, 3101, 3070, 3039, 3008, 2976, 2944, 2912,
-//   2879, 2846, 2813, 2780, 2747, 2713, 2679, 2645, 2611, 2576, 2542, 2507,
-//   2472, 2437, 2402, 2367, 2331, 2296, 2260, 2225, 2189, 2154, 2118, 2082,
-//   2047, 2012, 1976, 1940, 1905, 1869, 1834, 1798, 1763, 1727, 1692, 1657,
-//   1622, 1587, 1552, 1518, 1483, 1449, 1415, 1381, 1347, 1314, 1281, 1248,
-//   1215, 1182, 1150, 1118, 1086, 1055, 1024,  993,  963,  933,  903,  873,
-//    844,  816,  787,  759,  732,  705,  678,  651,  626,  600,  575,  550,
-//    526,  503,  479,  457,  434,  413,  391,  371,  350,  331,  312,  293,
-//    275,  257,  240,  224,  208,  192,  177,  163,  150,  136,  124,  112,
-//    101,   90,   80,   70,   61,   53,   45,   38,   32,   26,   20,   16
-// };
-// squarewave
-static const dacsample_t dac_buffer[DAC_BUFFER_SIZE] = {
-    // First half is max, second half is 0
-    [0 ... DAC_BUFFER_SIZE / 2 - 1]               = DAC_SAMPLE_MAX,
-    [DAC_BUFFER_SIZE / 2 ... DAC_BUFFER_SIZE - 1] = 0,
-};
-// squarewave
-static const dacsample_t dac_buffer_2[DAC_BUFFER_SIZE] = {
-    // opposite of dac_buffer above
-    [0 ... DAC_BUFFER_SIZE / 2 - 1]               = 0,
-    [DAC_BUFFER_SIZE / 2 ... DAC_BUFFER_SIZE - 1] = DAC_SAMPLE_MAX,
-};
-/*
- * DAC streaming callback.
- */
-size_t      nz = 0;
-static void end_cb1(DACDriver *dacp) {
-    (void)dacp;
-    nz++;
-    if ((nz % 1000) == 0) {
-        // palTogglePad(GPIOD, GPIOD_LED3);
-    }
-}
-/*
- * DAC error callback.
- */
-static void error_cb1(DACDriver *dacp, dacerror_t err) {
-    (void)dacp;
-    (void)err;
-    chSysHalt("DAC failure");
-}
-static const DACConfig dac1cfg1 = {.init = DAC_SAMPLE_MAX, .datamode = DAC_DHRM_12BIT_RIGHT};
-static const DACConversionGroup dacgrpcfg1 = {.num_channels = 1U, .end_cb = end_cb1, .error_cb = error_cb1, .trigger = DAC_TRG(0)};
-static const DACConfig dac1cfg2 = {.init = DAC_SAMPLE_MAX, .datamode = DAC_DHRM_12BIT_RIGHT};
-static const DACConversionGroup dacgrpcfg2 = {.num_channels = 1U, .end_cb = end_cb1, .error_cb = error_cb1, .trigger = DAC_TRG(0)};
-void audio_init() {
-    if (audio_initialized) {
-        return;
-    }
-// Check EEPROM
-#ifdef EEPROM_ENABLE
-    if (!eeconfig_is_enabled()) {
-        eeconfig_init();
-    }
-    audio_config.raw = eeconfig_read_audio();
-#else  // ARM EEPROM
-    audio_config.enable        = true;
-#    ifdef AUDIO_CLICKY_ON
-    audio_config.clicky_enable = true;
-#    endif
-#endif  // ARM EEPROM
-    /*
-     * Starting DAC1 driver, setting up the output pin as analog as suggested
-     * by the Reference Manual.
-     */
-    palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_ANALOG);
-    palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_ANALOG);
-    dacStart(&DACD1, &dac1cfg1);
-    dacStart(&DACD2, &dac1cfg2);
-    /*
-     * Start the note timer
-     */
-    gptStart(&GPTD8, &gpt8cfg1);
-    gptStartContinuous(&GPTD8, 2U);
-    /*
-     * Starting GPT6/7 driver, it is used for triggering the DAC.
-     */
-    START_CHANNEL_1();
-    START_CHANNEL_2();
-    /*
-     * Starting a continuous conversion.
-     */
-    dacStartConversion(&DACD1, &dacgrpcfg1, (dacsample_t *)dac_buffer, DAC_BUFFER_SIZE);
-    dacStartConversion(&DACD2, &dacgrpcfg2, (dacsample_t *)dac_buffer_2, DAC_BUFFER_SIZE);
-    audio_initialized = true;
-    stop_all_notes();
-}
-void audio_startup() {
-    if (audio_config.enable) {
-        PLAY_SONG(startup_song);
-    }
-}
-void stop_all_notes() {
-    dprintf("audio stop all notes");
-    if (!audio_initialized) {
-        audio_init();
-    }
-    voices = 0;
-    gptStopTimer(&GPTD6);
-    gptStopTimer(&GPTD7);
-    gptStopTimer(&GPTD8);
-    playing_notes = false;
-    playing_note  = false;
-    frequency     = 0;
-    frequency_alt = 0;
-    volume        = 0;
-    for (uint8_t i = 0; i < 8; i++) {
-        frequencies[i] = 0;
-        volumes[i]     = 0;
-    }
-}
-void stop_note(float freq) {
-    dprintf("audio stop note freq=%d", (int)freq);
-    if (playing_note) {
-        if (!audio_initialized) {
-            audio_init();
-        }
-        for (int i = 7; i >= 0; i--) {
-            if (frequencies[i] == freq) {
-                frequencies[i] = 0;
-                volumes[i]     = 0;
-                for (int j = i; (j < 7); j++) {
-                    frequencies[j]     = frequencies[j + 1];
-                    frequencies[j + 1] = 0;
-                    volumes[j]         = volumes[j + 1];
-                    volumes[j + 1]     = 0;
-                }
-                break;
-            }
-        }
-        voices--;
-        if (voices < 0) {
-            voices = 0;
-        }
-        if (voice_place >= voices) {
-            voice_place = 0;
-        }
-        if (voices == 0) {
-            STOP_CHANNEL_1();
-            STOP_CHANNEL_2();
-            gptStopTimer(&GPTD8);
-            frequency     = 0;
-            frequency_alt = 0;
-            volume        = 0;
-            playing_note  = false;
-        }
-    }
-}
-#ifdef VIBRATO_ENABLE
-float mod(float a, int b) {
-    float r = fmod(a, b);
-    return r < 0 ? r + b : r;
-}
-float vibrato(float average_freq) {
-#    ifdef VIBRATO_STRENGTH_ENABLE
-    float vibrated_freq = average_freq * pow(vibrato_lut[(int)vibrato_counter], vibrato_strength);
-#    else
-    float vibrated_freq = average_freq * vibrato_lut[(int)vibrato_counter];
-#    endif
-    vibrato_counter = mod((vibrato_counter + vibrato_rate * (1.0 + 440.0 / average_freq)), VIBRATO_LUT_LENGTH);
-    return vibrated_freq;
-}
-#endif
-static void gpt_cb8(GPTDriver *gptp) {
-    float freq;
-    if (playing_note) {
-        if (voices > 0) {
-            float freq_alt = 0;
-            if (voices > 1) {
-                if (polyphony_rate == 0) {
-                    if (glissando) {
-                        if (frequency_alt != 0 && frequency_alt < frequencies[voices - 2] && frequency_alt < frequencies[voices - 2] * pow(2, -440 / frequencies[voices - 2] / 12 / 2)) {
-                            frequency_alt = frequency_alt * pow(2, 440 / frequency_alt / 12 / 2);
-                        } else if (frequency_alt != 0 && frequency_alt > frequencies[voices - 2] && frequency_alt > frequencies[voices - 2] * pow(2, 440 / frequencies[voices - 2] / 12 / 2)) {
-                            frequency_alt = frequency_alt * pow(2, -440 / frequency_alt / 12 / 2);
-                        } else {
-                            frequency_alt = frequencies[voices - 2];
-                        }
-                    } else {
-                        frequency_alt = frequencies[voices - 2];
-                    }
-#ifdef VIBRATO_ENABLE
-                    if (vibrato_strength > 0) {
-                        freq_alt = vibrato(frequency_alt);
-                    } else {
-                        freq_alt = frequency_alt;
-                    }
-#else
-                    freq_alt = frequency_alt;
-#endif
-                }
-                if (envelope_index < 65535) {
-                    envelope_index++;
-                }
-                freq_alt = voice_envelope(freq_alt);
-                if (freq_alt < 30.517578125) {
-                    freq_alt = 30.52;
-                }
-                if (GET_CHANNEL_2_FREQ != (uint16_t)freq_alt) {
-                    UPDATE_CHANNEL_2_FREQ(freq_alt);
-                } else {
-                    RESTART_CHANNEL_2();
-                }
-                // note_timbre;
-            }
-            if (polyphony_rate > 0) {
-                if (voices > 1) {
-                    voice_place %= voices;
-                    if (place++ > (frequencies[voice_place] / polyphony_rate)) {
-                        voice_place = (voice_place + 1) % voices;
-                        place       = 0.0;
-                    }
-                }
-#ifdef VIBRATO_ENABLE
-                if (vibrato_strength > 0) {
-                    freq = vibrato(frequencies[voice_place]);
-                } else {
-                    freq = frequencies[voice_place];
-                }
-#else
-                freq = frequencies[voice_place];
-#endif
-            } else {
-                if (glissando) {
-                    if (frequency != 0 && frequency < frequencies[voices - 1] && frequency < frequencies[voices - 1] * pow(2, -440 / frequencies[voices - 1] / 12 / 2)) {
-                        frequency = frequency * pow(2, 440 / frequency / 12 / 2);
-                    } else if (frequency != 0 && frequency > frequencies[voices - 1] && frequency > frequencies[voices - 1] * pow(2, 440 / frequencies[voices - 1] / 12 / 2)) {
-                        frequency = frequency * pow(2, -440 / frequency / 12 / 2);
-                    } else {
-                        frequency = frequencies[voices - 1];
-                    }
-                } else {
-                    frequency = frequencies[voices - 1];
-                }
-#ifdef VIBRATO_ENABLE
-                if (vibrato_strength > 0) {
-                    freq = vibrato(frequency);
-                } else {
-                    freq = frequency;
-                }
-#else
-                freq = frequency;
-#endif
-            }
-            if (envelope_index < 65535) {
-                envelope_index++;
-            }
-            freq = voice_envelope(freq);
-            if (freq < 30.517578125) {
-                freq = 30.52;
-            }
-            if (GET_CHANNEL_1_FREQ != (uint16_t)freq) {
-                UPDATE_CHANNEL_1_FREQ(freq);
-            } else {
-                RESTART_CHANNEL_1();
-            }
-            // note_timbre;
-        }
-    }
-    if (playing_notes) {
-        if (note_frequency > 0) {
-#ifdef VIBRATO_ENABLE
-            if (vibrato_strength > 0) {
-                freq = vibrato(note_frequency);
-            } else {
-                freq = note_frequency;
-            }
-#else
-            freq = note_frequency;
-#endif
-            if (envelope_index < 65535) {
-                envelope_index++;
-            }
-            freq = voice_envelope(freq);
-            if (GET_CHANNEL_1_FREQ != (uint16_t)freq) {
-                UPDATE_CHANNEL_1_FREQ(freq);
-                UPDATE_CHANNEL_2_FREQ(freq);
-            }
-            // note_timbre;
-        } else {
-            // gptStopTimer(&GPTD6);
-            // gptStopTimer(&GPTD7);
-        }
-        note_position++;
-        bool end_of_note = false;
-        if (GET_CHANNEL_1_FREQ > 0) {
-            if (!note_resting)
-                end_of_note = (note_position >= (note_length * 8 - 1));
-            else
-                end_of_note = (note_position >= (note_length * 8));
-        } else {
-            end_of_note = (note_position >= (note_length * 8));
-        }
-        if (end_of_note) {
-            current_note++;
-            if (current_note >= notes_count) {
-                if (notes_repeat) {
-                    current_note = 0;
-                } else {
-                    STOP_CHANNEL_1();
-                    STOP_CHANNEL_2();
-                    // gptStopTimer(&GPTD8);
-                    playing_notes = false;
-                    return;
-                }
-            }
-            if (!note_resting) {
-                note_resting = true;
-                current_note--;
-                if ((*notes_pointer)[current_note][0] == (*notes_pointer)[current_note + 1][0]) {
-                    note_frequency = 0;
-                    note_length    = 1;
-                } else {
-                    note_frequency = (*notes_pointer)[current_note][0];
-                    note_length    = 1;
-                }
-            } else {
-                note_resting   = false;
-                envelope_index = 0;
-                note_frequency = (*notes_pointer)[current_note][0];
-                note_length    = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
-            }
-            note_position = 0;
-        }
-    }
-    if (!audio_config.enable) {
-        playing_notes = false;
-        playing_note  = false;
-    }
-}
-void play_note(float freq, int vol) {
-    dprintf("audio play note freq=%d vol=%d", (int)freq, vol);
-    if (!audio_initialized) {
-        audio_init();
-    }
-    if (audio_config.enable && voices < 8) {
-        // Cancel notes if notes are playing
-        if (playing_notes) {
-            stop_all_notes();
-        }
-        playing_note = true;
-        envelope_index = 0;
-        if (freq > 0) {
-            frequencies[voices] = freq;
-            volumes[voices]     = vol;
-            voices++;
-        }
-        gptStart(&GPTD8, &gpt8cfg1);
-        gptStartContinuous(&GPTD8, 2U);
-        RESTART_CHANNEL_1();
-        RESTART_CHANNEL_2();
-    }
-}
-void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat) {
-    if (!audio_initialized) {
-        audio_init();
-    }
-    if (audio_config.enable) {
-        // Cancel note if a note is playing
-        if (playing_note) {
-            stop_all_notes();
-        }
-        playing_notes = true;
-        notes_pointer = np;
-        notes_count   = n_count;
-        notes_repeat  = n_repeat;
-        place        = 0;
-        current_note = 0;
-        note_frequency = (*notes_pointer)[current_note][0];
-        note_length    = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
-        note_position  = 0;
-        gptStart(&GPTD8, &gpt8cfg1);
-        gptStartContinuous(&GPTD8, 2U);
-        RESTART_CHANNEL_1();
-        RESTART_CHANNEL_2();
-    }
-}
-bool is_playing_notes(void) { return playing_notes; }
-bool is_audio_on(void) { return (audio_config.enable != 0); }
-void audio_toggle(void) {
-    if (audio_config.enable) {
-        stop_all_notes();
-    }
-    audio_config.enable ^= 1;
-    eeconfig_update_audio(audio_config.raw);
-    if (audio_config.enable) {
-        audio_on_user();
-    }
-}
-void audio_on(void) {
-    audio_config.enable = 1;
-    eeconfig_update_audio(audio_config.raw);
-    audio_on_user();
-}
-void audio_off(void) {
-    stop_all_notes();
-    audio_config.enable = 0;
-    eeconfig_update_audio(audio_config.raw);
-}
-#ifdef VIBRATO_ENABLE
-// Vibrato rate functions
-void set_vibrato_rate(float rate) { vibrato_rate = rate; }
-void increase_vibrato_rate(float change) { vibrato_rate *= change; }
-void decrease_vibrato_rate(float change) { vibrato_rate /= change; }
-#    ifdef VIBRATO_STRENGTH_ENABLE
-void set_vibrato_strength(float strength) { vibrato_strength = strength; }
-void increase_vibrato_strength(float change) { vibrato_strength *= change; }
-void decrease_vibrato_strength(float change) { vibrato_strength /= change; }
-#    endif /* VIBRATO_STRENGTH_ENABLE */
-#endif /* VIBRATO_ENABLE */
-// Polyphony functions
-void set_polyphony_rate(float rate) { polyphony_rate = rate; }
-void enable_polyphony() { polyphony_rate = 5; }
-void disable_polyphony() { polyphony_rate = 0; }
-void increase_polyphony_rate(float change) { polyphony_rate *= change; }
-void decrease_polyphony_rate(float change) { polyphony_rate /= change; }
-// Timbre function
-void set_timbre(float timbre) { note_timbre = timbre; }
-// Tempo functions
-void set_tempo(uint8_t tempo) { note_tempo = tempo; }
-void decrease_tempo(uint8_t tempo_change) { note_tempo += tempo_change; }
-void increase_tempo(uint8_t tempo_change) {
-    if (note_tempo - tempo_change < 10) {
-        note_tempo = 10;
-    } else {
-        note_tempo -= tempo_change;
-    }
-}
diff --git a/quantum/audio/audio_pwm.c b/quantum/audio/audio_pwm.c
deleted file mode 100644
index d93ac4bb4..000000000
--- a/quantum/audio/audio_pwm.c
+++ /dev/null
@@ -1,606 +0,0 @@
-/* Copyright 2016 Jack Humbert
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-#include <stdio.h>
-#include <string.h>
-//#include <math.h>
-#include <avr/pgmspace.h>
-#include <avr/interrupt.h>
-#include <avr/io.h>
-#include "print.h"
-#include "audio.h"
-#include "keymap.h"
-#include "eeconfig.h"
-#define PI 3.14159265
-#define CPU_PRESCALER 8
-#ifndef STARTUP_SONG
-#    define STARTUP_SONG SONG(STARTUP_SOUND)
-#endif
-float startup_song[][2] = STARTUP_SONG;
-// Timer Abstractions
-// TIMSK3 - Timer/Counter #3 Interrupt Mask Register
-// Turn on/off 3A interputs, stopping/enabling the ISR calls
-#define ENABLE_AUDIO_COUNTER_3_ISR TIMSK3 |= _BV(OCIE3A)
-#define DISABLE_AUDIO_COUNTER_3_ISR TIMSK3 &= ~_BV(OCIE3A)
-// TCCR3A: Timer/Counter #3 Control Register
-// Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6
-#define ENABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A |= _BV(COM3A1);
-#define DISABLE_AUDIO_COUNTER_3_OUTPUT TCCR3A &= ~(_BV(COM3A1) | _BV(COM3A0));
-#define NOTE_PERIOD ICR3
-#define NOTE_DUTY_CYCLE OCR3A
-#ifdef PWM_AUDIO
-#    include "wave.h"
-#    define SAMPLE_DIVIDER 39
-#    define SAMPLE_RATE (2000000.0 / SAMPLE_DIVIDER / 2048)
-// Resistor value of 1/ (2 * PI * 10nF * (2000000 hertz / SAMPLE_DIVIDER / 10)) for 10nF cap
-float    places[8] = {0, 0, 0, 0, 0, 0, 0, 0};
-uint16_t place_int = 0;
-bool     repeat    = true;
-#endif
-void delay_us(int count) {
-    while (count--) {
-        _delay_us(1);
-    }
-}
-int   voices      = 0;
-int   voice_place = 0;
-float frequency   = 0;
-int   volume      = 0;
-long  position    = 0;
-float frequencies[8] = {0, 0, 0, 0, 0, 0, 0, 0};
-int   volumes[8]     = {0, 0, 0, 0, 0, 0, 0, 0};
-bool  sliding        = false;
-float place = 0;
-uint8_t* sample;
-uint16_t sample_length = 0;
-// float freq = 0;
-bool     playing_notes  = false;
-bool     playing_note   = false;
-float    note_frequency = 0;
-float    note_length    = 0;
-uint8_t  note_tempo     = TEMPO_DEFAULT;
-float    note_timbre    = TIMBRE_DEFAULT;
-uint16_t note_position  = 0;
-float (*notes_pointer)[][2];
-uint16_t notes_count;
-bool     notes_repeat;
-float    notes_rest;
-bool     note_resting = false;
-uint16_t current_note = 0;
-uint8_t  rest_counter = 0;
-#ifdef VIBRATO_ENABLE
-float vibrato_counter  = 0;
-float vibrato_strength = .5;
-float vibrato_rate     = 0.125;
-#endif
-float polyphony_rate = 0;
-static bool audio_initialized = false;
-audio_config_t audio_config;
-uint16_t envelope_index = 0;
-void audio_init() {
-    // Check EEPROM
-    if (!eeconfig_is_enabled()) {
-        eeconfig_init();
-    }
-    audio_config.raw = eeconfig_read_audio();
-#ifdef PWM_AUDIO
-    PLLFRQ = _BV(PDIV2);
-    PLLCSR = _BV(PLLE);
-    while (!(PLLCSR & _BV(PLOCK)))
-        ;
-    PLLFRQ |= _BV(PLLTM0); /* PCK 48MHz */
-    /* Init a fast PWM on Timer4 */
-    TCCR4A = _BV(COM4A0) | _BV(PWM4A); /* Clear OC4A on Compare Match */
-    TCCR4B = _BV(CS40);                /* No prescaling => f = PCK/256 = 187500Hz */
-    OCR4A  = 0;
-    /* Enable the OC4A output */
-    DDRC |= _BV(PORTC6);
-    DISABLE_AUDIO_COUNTER_3_ISR;  // Turn off 3A interputs
-    TCCR3A = 0x0;                                 // Options not needed
-    TCCR3B = _BV(CS31) | _BV(CS30) | _BV(WGM32);  // 64th prescaling and CTC
-    OCR3A  = SAMPLE_DIVIDER - 1;                  // Correct count/compare, related to sample playback
-#else
-    // Set port PC6 (OC3A and /OC4A) as output
-    DDRC |= _BV(PORTC6);
-    DISABLE_AUDIO_COUNTER_3_ISR;
-    // TCCR3A / TCCR3B: Timer/Counter #3 Control Registers
-    // Compare Output Mode (COM3An) = 0b00 = Normal port operation, OC3A disconnected from PC6
-    // Waveform Generation Mode (WGM3n) = 0b1110 = Fast PWM Mode 14 (Period = ICR3, Duty Cycle = OCR3A)
-    // Clock Select (CS3n) = 0b010 = Clock / 8
-    TCCR3A = (0 << COM3A1) | (0 << COM3A0) | (1 << WGM31) | (0 << WGM30);
-    TCCR3B = (1 << WGM33) | (1 << WGM32) | (0 << CS32) | (1 << CS31) | (0 << CS30);
-#endif
-    audio_initialized = true;
-}
-void audio_startup() {
-    if (audio_config.enable) {
-        PLAY_SONG(startup_song);
-    }
-}
-void stop_all_notes() {
-    if (!audio_initialized) {
-        audio_init();
-    }
-    voices = 0;
-#ifdef PWM_AUDIO
-    DISABLE_AUDIO_COUNTER_3_ISR;
-#else
-    DISABLE_AUDIO_COUNTER_3_ISR;
-    DISABLE_AUDIO_COUNTER_3_OUTPUT;
-#endif
-    playing_notes = false;
-    playing_note  = false;
-    frequency     = 0;
-    volume        = 0;
-    for (uint8_t i = 0; i < 8; i++) {
-        frequencies[i] = 0;
-        volumes[i]     = 0;
-    }
-}
-void stop_note(float freq) {
-    if (playing_note) {
-        if (!audio_initialized) {
-            audio_init();
-        }
-#ifdef PWM_AUDIO
-        freq = freq / SAMPLE_RATE;
-#endif
-        for (int i = 7; i >= 0; i--) {
-            if (frequencies[i] == freq) {
-                frequencies[i] = 0;
-                volumes[i]     = 0;
-                for (int j = i; (j < 7); j++) {
-                    frequencies[j]     = frequencies[j + 1];
-                    frequencies[j + 1] = 0;
-                    volumes[j]         = volumes[j + 1];
-                    volumes[j + 1]     = 0;
-                }
-                break;
-            }
-        }
-        voices--;
-        if (voices < 0) voices = 0;
-        if (voice_place >= voices) {
-            voice_place = 0;
-        }
-        if (voices == 0) {
-#ifdef PWM_AUDIO
-            DISABLE_AUDIO_COUNTER_3_ISR;
-#else
-            DISABLE_AUDIO_COUNTER_3_ISR;
-            DISABLE_AUDIO_COUNTER_3_OUTPUT;
-#endif
-            frequency    = 0;
-            volume       = 0;
-            playing_note = false;
-        }
-    }
-}
-#ifdef VIBRATO_ENABLE
-float mod(float a, int b) {
-    float r = fmod(a, b);
-    return r < 0 ? r + b : r;
-}
-float vibrato(float average_freq) {
-#    ifdef VIBRATO_STRENGTH_ENABLE
-    float vibrated_freq = average_freq * pow(vibrato_lut[(int)vibrato_counter], vibrato_strength);
-#    else
-    float vibrated_freq = average_freq * vibrato_lut[(int)vibrato_counter];
-#    endif
-    vibrato_counter = mod((vibrato_counter + vibrato_rate * (1.0 + 440.0 / average_freq)), VIBRATO_LUT_LENGTH);
-    return vibrated_freq;
-}
-#endif
-ISR(TIMER3_COMPA_vect) {
-    if (playing_note) {
-#ifdef PWM_AUDIO
-        if (voices == 1) {
-            // SINE
-            OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]) >> 2;
-            // SQUARE
-            // if (((int)place) >= 1024){
-            //     OCR4A = 0xFF >> 2;
-            // } else {
-            //     OCR4A = 0x00;
-            // }
-            // SAWTOOTH
-            // OCR4A = (int)place / 4;
-            // TRIANGLE
-            // if (((int)place) >= 1024) {
-            //     OCR4A = (int)place / 2;
-            // } else {
-            //     OCR4A = 2048 - (int)place / 2;
-            // }
-            place += frequency;
-            if (place >= SINE_LENGTH) place -= SINE_LENGTH;
-        } else {
-            int sum = 0;
-            for (int i = 0; i < voices; i++) {
-                // SINE
-                sum += pgm_read_byte(&sinewave[(uint16_t)places[i]]) >> 2;
-                // SQUARE
-                // if (((int)places[i]) >= 1024){
-                //     sum += 0xFF >> 2;
-                // } else {
-                //     sum += 0x00;
-                // }
-                places[i] += frequencies[i];
-                if (places[i] >= SINE_LENGTH) places[i] -= SINE_LENGTH;
-            }
-            OCR4A = sum;
-        }
-#else
-        if (voices > 0) {
-            float freq;
-            if (polyphony_rate > 0) {
-                if (voices > 1) {
-                    voice_place %= voices;
-                    if (place++ > (frequencies[voice_place] / polyphony_rate / CPU_PRESCALER)) {
-                        voice_place = (voice_place + 1) % voices;
-                        place       = 0.0;
-                    }
-                }
-#    ifdef VIBRATO_ENABLE
-                if (vibrato_strength > 0) {
-                    freq = vibrato(frequencies[voice_place]);
-                } else {
-#    else
-                {
-#    endif
-                    freq = frequencies[voice_place];
-                }
-            } else {
-                if (frequency != 0 && frequency < frequencies[voices - 1] && frequency < frequencies[voices - 1] * pow(2, -440 / frequencies[voices - 1] / 12 / 2)) {
-                    frequency = frequency * pow(2, 440 / frequency / 12 / 2);
-                } else if (frequency != 0 && frequency > frequencies[voices - 1] && frequency > frequencies[voices - 1] * pow(2, 440 / frequencies[voices - 1] / 12 / 2)) {
-                    frequency = frequency * pow(2, -440 / frequency / 12 / 2);
-                } else {
-                    frequency = frequencies[voices - 1];
-                }
-#    ifdef VIBRATO_ENABLE
-                if (vibrato_strength > 0) {
-                    freq = vibrato(frequency);
-                } else {
-#    else
-                {
-#    endif
-                    freq = frequency;
-                }
-            }
-            if (envelope_index < 65535) {
-                envelope_index++;
-            }
-            freq = voice_envelope(freq);
-            if (freq < 30.517578125) freq = 30.52;
-            NOTE_PERIOD     = (int)(((double)F_CPU) / (freq * CPU_PRESCALER));                  // Set max to the period
-            NOTE_DUTY_CYCLE = (int)((((double)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);  // Set compare to half the period
-        }
-#endif
-    }
-    // SAMPLE
-    // OCR4A = pgm_read_byte(&sample[(uint16_t)place_int]);
-    // place_int++;
-    // if (place_int >= sample_length)
-    //     if (repeat)
-    //         place_int -= sample_length;
-    //     else
-    //         DISABLE_AUDIO_COUNTER_3_ISR;
-    if (playing_notes) {
-#ifdef PWM_AUDIO
-        OCR4A = pgm_read_byte(&sinewave[(uint16_t)place]) >> 0;
-        place += note_frequency;
-        if (place >= SINE_LENGTH) place -= SINE_LENGTH;
-#else
-        if (note_frequency > 0) {
-            float freq;
-#    ifdef VIBRATO_ENABLE
-            if (vibrato_strength > 0) {
-                freq = vibrato(note_frequency);
-            } else {
-#    else
-            {
-#    endif
-                freq = note_frequency;
-            }
-            if (envelope_index < 65535) {
-                envelope_index++;
-            }
-            freq = voice_envelope(freq);
-            NOTE_PERIOD     = (int)(((double)F_CPU) / (freq * CPU_PRESCALER));                  // Set max to the period
-            NOTE_DUTY_CYCLE = (int)((((double)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre);  // Set compare to half the period
-        } else {
-            NOTE_PERIOD     = 0;
-            NOTE_DUTY_CYCLE = 0;
-        }
-#endif
-        note_position++;
-        bool end_of_note = false;
-        if (NOTE_PERIOD > 0)
-            end_of_note = (note_position >= (note_length / NOTE_PERIOD * 0xFFFF));
-        else
-            end_of_note = (note_position >= (note_length * 0x7FF));
-        if (end_of_note) {
-            current_note++;
-            if (current_note >= notes_count) {
-                if (notes_repeat) {
-                    current_note = 0;
-                } else {
-#ifdef PWM_AUDIO
-                    DISABLE_AUDIO_COUNTER_3_ISR;
-#else
-                    DISABLE_AUDIO_COUNTER_3_ISR;
-                    DISABLE_AUDIO_COUNTER_3_OUTPUT;
-#endif
-                    playing_notes = false;
-                    return;
-                }
-            }
-            if (!note_resting && (notes_rest > 0)) {
-                note_resting   = true;
-                note_frequency = 0;
-                note_length    = notes_rest;
-                current_note--;
-            } else {
-                note_resting = false;
-#ifdef PWM_AUDIO
-                note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE;
-                note_length    = (*notes_pointer)[current_note][1] * (((float)note_tempo) / 100);
-#else
-                envelope_index = 0;
-                note_frequency = (*notes_pointer)[current_note][0];
-                note_length    = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
-#endif
-            }
-            note_position = 0;
-        }
-    }
-    if (!audio_config.enable) {
-        playing_notes = false;
-        playing_note  = false;
-    }
-}
-void play_note(float freq, int vol) {
-    if (!audio_initialized) {
-        audio_init();
-    }
-    if (audio_config.enable && voices < 8) {
-        DISABLE_AUDIO_COUNTER_3_ISR;
-        // Cancel notes if notes are playing
-        if (playing_notes) stop_all_notes();
-        playing_note = true;
-        envelope_index = 0;
-#ifdef PWM_AUDIO
-        freq = freq / SAMPLE_RATE;
-#endif
-        if (freq > 0) {
-            frequencies[voices] = freq;
-            volumes[voices]     = vol;
-            voices++;
-        }
-#ifdef PWM_AUDIO
-        ENABLE_AUDIO_COUNTER_3_ISR;
-#else
-        ENABLE_AUDIO_COUNTER_3_ISR;
-        ENABLE_AUDIO_COUNTER_3_OUTPUT;
-#endif
-    }
-}
-void play_notes(float (*np)[][2], uint16_t n_count, bool n_repeat, float n_rest) {
-    if (!audio_initialized) {
-        audio_init();
-    }
-    if (audio_config.enable) {
-        DISABLE_AUDIO_COUNTER_3_ISR;
-        // Cancel note if a note is playing
-        if (playing_note) stop_all_notes();
-        playing_notes = true;
-        notes_pointer = np;
-        notes_count   = n_count;
-        notes_repeat  = n_repeat;
-        notes_rest    = n_rest;
-        place        = 0;
-        current_note = 0;
-#ifdef PWM_AUDIO
-        note_frequency = (*notes_pointer)[current_note][0] / SAMPLE_RATE;
-        note_length    = (*notes_pointer)[current_note][1] * (((float)note_tempo) / 100);
-#else
-        note_frequency = (*notes_pointer)[current_note][0];
-        note_length    = ((*notes_pointer)[current_note][1] / 4) * (((float)note_tempo) / 100);
-#endif
-        note_position = 0;
-#ifdef PWM_AUDIO
-        ENABLE_AUDIO_COUNTER_3_ISR;
-#else
-        ENABLE_AUDIO_COUNTER_3_ISR;
-        ENABLE_AUDIO_COUNTER_3_OUTPUT;
-#endif
-    }
-}
-#ifdef PWM_AUDIO
-void play_sample(uint8_t* s, uint16_t l, bool r) {
-    if (!audio_initialized) {
-        audio_init();
-    }
-    if (audio_config.enable) {
-        DISABLE_AUDIO_COUNTER_3_ISR;
-        stop_all_notes();
-        place_int     = 0;
-        sample        = s;
-        sample_length = l;
-        repeat        = r;
-        ENABLE_AUDIO_COUNTER_3_ISR;
-    }
-}
-#endif
-void audio_toggle(void) {
-    audio_config.enable ^= 1;
-    eeconfig_update_audio(audio_config.raw);
-}
-void audio_on(void) {
-    audio_config.enable = 1;
-    eeconfig_update_audio(audio_config.raw);
-}
-void audio_off(void) {
-    audio_config.enable = 0;
-    eeconfig_update_audio(audio_config.raw);
-}
-#ifdef VIBRATO_ENABLE
-// Vibrato rate functions
-void set_vibrato_rate(float rate) { vibrato_rate = rate; }
-void increase_vibrato_rate(float change) { vibrato_rate *= change; }
-void decrease_vibrato_rate(float change) { vibrato_rate /= change; }
-#    ifdef VIBRATO_STRENGTH_ENABLE
-void set_vibrato_strength(float strength) { vibrato_strength = strength; }
-void increase_vibrato_strength(float change) { vibrato_strength *= change; }
-void decrease_vibrato_strength(float change) { vibrato_strength /= change; }
-#    endif /* VIBRATO_STRENGTH_ENABLE */
-#endif /* VIBRATO_ENABLE */
-// Polyphony functions
-void set_polyphony_rate(float rate) { polyphony_rate = rate; }
-void enable_polyphony() { polyphony_rate = 5; }
-void disable_polyphony() { polyphony_rate = 0; }
-void increase_polyphony_rate(float change) { polyphony_rate *= change; }
-void decrease_polyphony_rate(float change) { polyphony_rate /= change; }
-// Timbre function
-void set_timbre(float timbre) { note_timbre = timbre; }
-// Tempo functions
-void set_tempo(uint8_t tempo) { note_tempo = tempo; }
-void decrease_tempo(uint8_t tempo_change) { note_tempo += tempo_change; }
-void increase_tempo(uint8_t tempo_change) {
-    if (note_tempo - tempo_change < 10) {
-        note_tempo = 10;
-    } else {
-        note_tempo -= tempo_change;
-    }
-}
-//------------------------------------------------------------------------------
-// Override these functions in your keymap file to play different tunes on
-// startup and bootloader jump
-__attribute__((weak)) void play_startup_tone() {}
-__attribute__((weak)) void play_goodbye_tone() {}
-//------------------------------------------------------------------------------
diff --git a/quantum/audio/driver_avr_pwm.h b/quantum/audio/driver_avr_pwm.h
new file mode 100644
index 000000000..d6eb3571d
--- /dev/null
+++ b/quantum/audio/driver_avr_pwm.h
@@ -0,0 +1,17 @@
+/* Copyright 2020 Jack Humbert
+ * Copyright 2020 JohSchneider
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
diff --git a/quantum/audio/driver_avr_pwm_hardware.c b/quantum/audio/driver_avr_pwm_hardware.c
new file mode 100644
index 000000000..492b9bfb0
--- /dev/null
+++ b/quantum/audio/driver_avr_pwm_hardware.c
@@ -0,0 +1,322 @@
+/* Copyright 2016 Jack Humbert
+ * Copyright 2020 JohSchneider
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#if defined(__AVR__)
+#    include <avr/pgmspace.h>
+#    include <avr/interrupt.h>
+#    include <avr/io.h>
+#endif
+#include "audio.h"
+extern bool    playing_note;
+extern bool    playing_melody;
+extern uint8_t note_timbre;
+#define CPU_PRESCALER 8
+/*
+  Audio Driver: PWM
+  drive up to two speakers through the AVR PWM hardware-peripheral, using timer1 and/or timer3 on Atmega32U4.
+  the primary channel_1 can be connected to either pin PC4 PC5 or PC6 (the later being used by most AVR based keyboards) with a PMW signal generated by timer3
+  and an optional secondary channel_2 on either pin PB5, PB6 or PB7, with a PWM signal from timer1
+  alternatively, the PWM pins on PORTB can be used as only/primary speaker
+*/
+#if defined(AUDIO_PIN) && (AUDIO_PIN != C4) && (AUDIO_PIN != C5) && (AUDIO_PIN != C6) && (AUDIO_PIN != B5) && (AUDIO_PIN != B6) && (AUDIO_PIN != B7)
+#    error "Audio feature enabled, but no suitable pin selected as AUDIO_PIN - see docs/feature_audio under the AVR settings for available options."
+#endif
+#if (AUDIO_PIN == C4) || (AUDIO_PIN == C5) || (AUDIO_PIN == C6)
+#    define AUDIO1_PIN_SET
+#    define AUDIO1_TIMSKx TIMSK3
+#    define AUDIO1_TCCRxA TCCR3A
+#    define AUDIO1_TCCRxB TCCR3B
+#    define AUDIO1_ICRx ICR3
+#    define AUDIO1_WGMx0 WGM30
+#    define AUDIO1_WGMx1 WGM31
+#    define AUDIO1_WGMx2 WGM32
+#    define AUDIO1_WGMx3 WGM33
+#    define AUDIO1_CSx0 CS30
+#    define AUDIO1_CSx1 CS31
+#    define AUDIO1_CSx2 CS32
+#    if (AUDIO_PIN == C6)
+#        define AUDIO1_COMxy0 COM3A0
+#        define AUDIO1_COMxy1 COM3A1
+#        define AUDIO1_OCIExy OCIE3A
+#        define AUDIO1_OCRxy OCR3A
+#        define AUDIO1_PIN C6
+#        define AUDIO1_TIMERx_COMPy_vect TIMER3_COMPA_vect
+#    elif (AUDIO_PIN == C5)
+#        define AUDIO1_COMxy0 COM3B0
+#        define AUDIO1_COMxy1 COM3B1
+#        define AUDIO1_OCIExy OCIE3B
+#        define AUDIO1_OCRxy OCR3B
+#        define AUDIO1_PIN C5
+#        define AUDIO1_TIMERx_COMPy_vect TIMER3_COMPB_vect
+#    elif (AUDIO_PIN == C4)
+#        define AUDIO1_COMxy0 COM3C0
+#        define AUDIO1_COMxy1 COM3C1
+#        define AUDIO1_OCIExy OCIE3C
+#        define AUDIO1_OCRxy OCR3C
+#        define AUDIO1_PIN C4
+#        define AUDIO1_TIMERx_COMPy_vect TIMER3_COMPC_vect
+#    endif
+#endif
+#if defined(AUDIO_PIN) && defined(AUDIO_PIN_ALT) && (AUDIO_PIN == AUDIO_PIN_ALT)
+#    error "Audio feature: AUDIO_PIN and AUDIO_PIN_ALT on the same pin makes no sense."
+#endif
+#if ((AUDIO_PIN == B5) && ((AUDIO_PIN_ALT == B6) || (AUDIO_PIN_ALT == B7))) || ((AUDIO_PIN == B6) && ((AUDIO_PIN_ALT == B5) || (AUDIO_PIN_ALT == B7))) || ((AUDIO_PIN == B7) && ((AUDIO_PIN_ALT == B5) || (AUDIO_PIN_ALT == B6)))
+#    error "Audio feature: PORTB as AUDIO_PIN and AUDIO_PIN_ALT at the same time is not supported."
+#endif
+#if defined(AUDIO_PIN_ALT) && (AUDIO_PIN_ALT != B5) && (AUDIO_PIN_ALT != B6) && (AUDIO_PIN_ALT != B7)
+#    error "Audio feature: the pin selected as AUDIO_PIN_ALT is not supported."
+#endif
+#if (AUDIO_PIN == B5) || (AUDIO_PIN == B6) || (AUDIO_PIN == B7) || (AUDIO_PIN_ALT == B5) || (AUDIO_PIN_ALT == B6) || (AUDIO_PIN_ALT == B7)
+#    define AUDIO2_PIN_SET
+#    define AUDIO2_TIMSKx TIMSK1
+#    define AUDIO2_TCCRxA TCCR1A
+#    define AUDIO2_TCCRxB TCCR1B
+#    define AUDIO2_ICRx ICR1
+#    define AUDIO2_WGMx0 WGM10
+#    define AUDIO2_WGMx1 WGM11
+#    define AUDIO2_WGMx2 WGM12
+#    define AUDIO2_WGMx3 WGM13
+#    define AUDIO2_CSx0 CS10
+#    define AUDIO2_CSx1 CS11
+#    define AUDIO2_CSx2 CS12
+#    if (AUDIO_PIN == B5) || (AUDIO_PIN_ALT == B5)
+#        define AUDIO2_COMxy0 COM1A0
+#        define AUDIO2_COMxy1 COM1A1
+#        define AUDIO2_OCIExy OCIE1A
+#        define AUDIO2_OCRxy OCR1A
+#        define AUDIO2_PIN B5
+#        define AUDIO2_TIMERx_COMPy_vect TIMER1_COMPA_vect
+#    elif (AUDIO_PIN == B6) || (AUDIO_PIN_ALT == B6)
+#        define AUDIO2_COMxy0 COM1B0
+#        define AUDIO2_COMxy1 COM1B1
+#        define AUDIO2_OCIExy OCIE1B
+#        define AUDIO2_OCRxy OCR1B
+#        define AUDIO2_PIN B6
+#        define AUDIO2_TIMERx_COMPy_vect TIMER1_COMPB_vect
+#    elif (AUDIO_PIN == B7) || (AUDIO_PIN_ALT == B7)
+#        define AUDIO2_COMxy0 COM1C0
+#        define AUDIO2_COMxy1 COM1C1
+#        define AUDIO2_OCIExy OCIE1C
+#        define AUDIO2_OCRxy OCR1C
+#        define AUDIO2_PIN B7
+#        define AUDIO2_TIMERx_COMPy_vect TIMER1_COMPC_vect
+#    endif
+#endif
+// C6 seems to be the assumed default by many existing keyboard - but sill warn the user
+#if !defined(AUDIO1_PIN_SET) && !defined(AUDIO2_PIN_SET)
+#    pragma message "Audio feature enabled, but no suitable pin selected - see docs/feature_audio under the AVR settings for available options. Don't expect to hear anything... :-)"
+// TODO: make this an error - go through the breaking-change-process and change all keyboards to the new define
+#endif
+// -----------------------------------------------------------------------------
+#ifdef AUDIO1_PIN_SET
+static float channel_1_frequency = 0.0f;
+void         channel_1_set_frequency(float freq) {
+    if (freq == 0.0f)  // a pause/rest is a valid "note" with freq=0
+    {
+        // disable the output, but keep the pwm-ISR going (with the previous
+        // frequency) so the audio-state keeps getting updated
+        // Note: setting the duty-cycle 0 is not possible on non-inverting PWM mode - see the AVR data-sheet
+        AUDIO1_TCCRxA &= ~(_BV(AUDIO1_COMxy1) | _BV(AUDIO1_COMxy0));
+        return;
+    } else {
+        AUDIO1_TCCRxA |= _BV(AUDIO1_COMxy1);  // enable output, PWM mode
+    }
+    channel_1_frequency = freq;
+    // set pwm period
+    AUDIO1_ICRx = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
+    // and duty cycle
+    AUDIO1_OCRxy = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre / 100);
+}
+void channel_1_start(void) {
+    // enable timer-counter ISR
+    AUDIO1_TIMSKx |= _BV(AUDIO1_OCIExy);
+    // enable timer-counter output
+    AUDIO1_TCCRxA |= _BV(AUDIO1_COMxy1);
+}
+void channel_1_stop(void) {
+    // disable timer-counter ISR
+    AUDIO1_TIMSKx &= ~_BV(AUDIO1_OCIExy);
+    // disable timer-counter output
+    AUDIO1_TCCRxA &= ~(_BV(AUDIO1_COMxy1) | _BV(AUDIO1_COMxy0));
+}
+#endif
+#ifdef AUDIO2_PIN_SET
+static float channel_2_frequency = 0.0f;
+void         channel_2_set_frequency(float freq) {
+    if (freq == 0.0f) {
+        AUDIO2_TCCRxA &= ~(_BV(AUDIO2_COMxy1) | _BV(AUDIO2_COMxy0));
+        return;
+    } else {
+        AUDIO2_TCCRxA |= _BV(AUDIO2_COMxy1);
+    }
+    channel_2_frequency = freq;
+    AUDIO2_ICRx  = (uint16_t)(((float)F_CPU) / (freq * CPU_PRESCALER));
+    AUDIO2_OCRxy = (uint16_t)((((float)F_CPU) / (freq * CPU_PRESCALER)) * note_timbre / 100);
+}
+float channel_2_get_frequency(void) { return channel_2_frequency; }
+void channel_2_start(void) {
+    AUDIO2_TIMSKx |= _BV(AUDIO2_OCIExy);
+    AUDIO2_TCCRxA |= _BV(AUDIO2_COMxy1);
+}
+void channel_2_stop(void) {
+    AUDIO2_TIMSKx &= ~_BV(AUDIO2_OCIExy);
+    AUDIO2_TCCRxA &= ~(_BV(AUDIO2_COMxy1) | _BV(AUDIO2_COMxy0));
+}
+#endif
+void audio_driver_initialize() {
+#ifdef AUDIO1_PIN_SET
+    channel_1_stop();
+    setPinOutput(AUDIO1_PIN);
+#endif
+#ifdef AUDIO2_PIN_SET
+    channel_2_stop();
+    setPinOutput(AUDIO2_PIN);
+#endif
+    // TCCR3A / TCCR3B: Timer/Counter #3 Control Registers TCCR3A/TCCR3B, TCCR1A/TCCR1B
+    // Compare Output Mode (COM3An and COM1An) = 0b00 = Normal port operation
+    //   OC3A -- PC6
+    //   OC3B -- PC5
+    //   OC3C -- PC4
+    //   OC1A -- PB5
+    //   OC1B -- PB6
+    //   OC1C -- PB7
+    // Waveform Generation Mode (WGM3n) = 0b1110 = Fast PWM Mode 14. Period = ICR3, Duty Cycle OCR3A)
+    //   OCR3A - PC6
+    //   OCR3B - PC5
+    //   OCR3C - PC4
+    //   OCR1A - PB5
+    //   OCR1B - PB6
+    //   OCR1C - PB7
+    // Clock Select (CS3n) = 0b010 = Clock / 8
+#ifdef AUDIO1_PIN_SET
+    // initialize timer-counter
+    AUDIO1_TCCRxA = (0 << AUDIO1_COMxy1) | (0 << AUDIO1_COMxy0) | (1 << AUDIO1_WGMx1) | (0 << AUDIO1_WGMx0);
+    AUDIO1_TCCRxB = (1 << AUDIO1_WGMx3) | (1 << AUDIO1_WGMx2) | (0 << AUDIO1_CSx2) | (1 << AUDIO1_CSx1) | (0 << AUDIO1_CSx0);
+#endif
+#ifdef AUDIO2_PIN_SET
+    AUDIO2_TCCRxA = (0 << AUDIO2_COMxy1) | (0 << AUDIO2_COMxy0) | (1 << AUDIO2_WGMx1) | (0 << AUDIO2_WGMx0);
+    AUDIO2_TCCRxB = (1 << AUDIO2_WGMx3) | (1 << AUDIO2_WGMx2) | (0 << AUDIO2_CSx2) | (1 << AUDIO2_CSx1) | (0 << AUDIO2_CSx0);
+#endif
+}
+void audio_driver_stop() {
+#ifdef AUDIO1_PIN_SET
+    channel_1_stop();
+#endif
+#ifdef AUDIO2_PIN_SET
+    channel_2_stop();
+#endif
+}
+void audio_driver_start(void) {
+#ifdef AUDIO1_PIN_SET
+    channel_1_start();
+    if (playing_note) {
+        channel_1_set_frequency(audio_get_processed_frequency(0));
+    }
+#endif
+#if !defined(AUDIO1_PIN_SET) && defined(AUDIO2_PIN_SET)
+    channel_2_start();
+    if (playing_note) {
+        channel_2_set_frequency(audio_get_processed_frequency(0));
+    }
+#endif
+}
+static volatile uint32_t isr_counter = 0;
+#ifdef AUDIO1_PIN_SET
+ISR(AUDIO1_TIMERx_COMPy_vect) {
+    isr_counter++;
+    if (isr_counter < channel_1_frequency / (CPU_PRESCALER * 8)) return;
+    isr_counter        = 0;
+    bool state_changed = audio_update_state();
+    if (!playing_note && !playing_melody) {
+        channel_1_stop();
+#    ifdef AUDIO2_PIN_SET
+        channel_2_stop();
+#    endif
+        return;
+    }
+    if (state_changed) {
+        channel_1_set_frequency(audio_get_processed_frequency(0));
+#    ifdef AUDIO2_PIN_SET
+        if (audio_get_number_of_active_tones() > 1) {
+            channel_2_set_frequency(audio_get_processed_frequency(1));
+        } else {
+            channel_2_stop();
+        }
+#    endif
+    }
+}
+#endif
+#if !defined(AUDIO1_PIN_SET) && defined(AUDIO2_PIN_SET)
+ISR(AUDIO2_TIMERx_COMPy_vect) {
+    isr_counter++;
+    if (isr_counter < channel_2_frequency / (CPU_PRESCALER * 8)) return;
+    isr_counter        = 0;
+    bool state_changed = audio_update_state();
+    if (!playing_note && !playing_melody) {
+        channel_2_stop();
+        return;
+    }
+    if (state_changed) {
+        channel_2_set_frequency(audio_get_processed_frequency(0));
+    }
+}
+#endif
diff --git a/quantum/audio/driver_chibios_dac.h b/quantum/audio/driver_chibios_dac.h
new file mode 100644
index 000000000..07cd622ea
--- /dev/null
+++ b/quantum/audio/driver_chibios_dac.h
@@ -0,0 +1,126 @@
+/* Copyright 2019 Jack Humbert
+ * Copyright 2020 JohSchneider
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#ifndef A4
+#    define A4 PAL_LINE(GPIOA, 4)
+#endif
+#ifndef A5
+#    define A5 PAL_LINE(GPIOA, 5)
+#endif
+/**
+ * Size of the dac_buffer arrays. All must be the same size.
+ */
+#define AUDIO_DAC_BUFFER_SIZE 256U
+/**
+ * Highest value allowed sample value.
+ * since the DAC is limited to 12 bit, the absolute max is 0xfff = 4095U;
+ * lower values adjust the peak-voltage aka volume down.
+ * adjusting this value has only an effect on a sample-buffer whose values are
+ * are NOT pregenerated - see square-wave
+ */
+#ifndef AUDIO_DAC_SAMPLE_MAX
+#    define AUDIO_DAC_SAMPLE_MAX 4095U
+#endif
+#if !defined(AUDIO_DAC_SAMPLE_RATE) && !defined(AUDIO_MAX_SIMULTANEOUS_TONES) && !defined(AUDIO_DAC_QUALITY_VERY_LOW) && !defined(AUDIO_DAC_QUALITY_LOW) && !defined(AUDIO_DAC_QUALITY_HIGH) && !defined(AUDIO_DAC_QUALITY_VERY_HIGH)
+#    define AUDIO_DAC_QUALITY_SANE_MINIMUM
+#endif
+/**
+ * These presets allow you to quickly switch between quality settings for
+ * the DAC. The sample rate and maximum number of simultaneous tones roughly
+ * has an inverse relationship - slightly higher sample rates may be possible.
+ *
+ * NOTE: a high sample-rate results in a higher cpu-load, which might lead to
+ *       (audible) discontinuities and/or starve other processes of cpu-time
+ *       (like RGB-led back-lighting, ...)
+ */
+#ifdef AUDIO_DAC_QUALITY_VERY_LOW
+#    define AUDIO_DAC_SAMPLE_RATE 11025U
+#    define AUDIO_MAX_SIMULTANEOUS_TONES 8
+#endif
+#ifdef AUDIO_DAC_QUALITY_LOW
+#    define AUDIO_DAC_SAMPLE_RATE 22050U
+#    define AUDIO_MAX_SIMULTANEOUS_TONES 4
+#endif
+#ifdef AUDIO_DAC_QUALITY_HIGH
+#    define AUDIO_DAC_SAMPLE_RATE 44100U
+#    define AUDIO_MAX_SIMULTANEOUS_TONES 2
+#endif
+#ifdef AUDIO_DAC_QUALITY_VERY_HIGH
+#    define AUDIO_DAC_SAMPLE_RATE 88200U
+#    define AUDIO_MAX_SIMULTANEOUS_TONES 1
+#endif
+#ifdef AUDIO_DAC_QUALITY_SANE_MINIMUM
+/* a sane-minimum config: with a trade-off between cpu-load and tone-range
+ *
+ * the (currently) highest defined note is NOTE_B8 with 7902Hz; if we now
+ * aim for an even even multiple of the buffer-size, we end up with:
+ * ( roundUptoPow2(highest note / AUDIO_DAC_BUFFER_SIZE) * nyquist-rate * AUDIO_DAC_BUFFER_SIZE)
+ *                              7902/256 = 30.867        *       2      * 256 ~= 16384
+ * which works out (but the 'scope shows some sampling artifacts with lower harmonics :-P)
+ */
+#    define AUDIO_DAC_SAMPLE_RATE 16384U
+#    define AUDIO_MAX_SIMULTANEOUS_TONES 8
+#endif
+/**
+ * Effective bit-rate of the DAC. 44.1khz is the standard for most audio - any
+ * lower will sacrifice perceptible audio quality. Any higher will limit the
+ * number of simultaneous tones. In most situations, a tenth (1/10) of the
+ * sample rate is where notes become unbearable.
+ */
+#ifndef AUDIO_DAC_SAMPLE_RATE
+#    define AUDIO_DAC_SAMPLE_RATE 44100U
+#endif
+/**
+ * The number of tones that can be played simultaneously. If too high a value
+ * is used here, the keyboard will freeze and glitch-out when that many tones
+ * are being played.
+ */
+#ifndef AUDIO_MAX_SIMULTANEOUS_TONES
+#    define AUDIO_MAX_SIMULTANEOUS_TONES 2
+#endif
+/**
+ * The default value of the DAC when not playing anything. Certain hardware
+ * setups may require a high (AUDIO_DAC_SAMPLE_MAX) or low (0) value here.
+ * Since multiple added sine waves tend to oscillate around the midpoint,
+ * and possibly never/rarely reach either 0 of MAX, 1/2 MAX can be a
+ * reasonable default value.
+ */
+#ifndef AUDIO_DAC_OFF_VALUE
+#    define AUDIO_DAC_OFF_VALUE AUDIO_DAC_SAMPLE_MAX / 2
+#endif
+#if AUDIO_DAC_OFF_VALUE > AUDIO_DAC_SAMPLE_MAX
+#    error "AUDIO_DAC: OFF_VALUE may not be larger than SAMPLE_MAX"
+#endif
+/**
+ *user overridable sample generation/processing
+ */
+uint16_t dac_value_generate(void);
diff --git a/quantum/audio/driver_chibios_dac_additive.c b/quantum/audio/driver_chibios_dac_additive.c
new file mode 100644
index 000000000..db304adb8
--- /dev/null
+++ b/quantum/audio/driver_chibios_dac_additive.c
@@ -0,0 +1,335 @@
+/* Copyright 2016-2019 Jack Humbert
+ * Copyright 2020 JohSchneider
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "audio.h"
+#include <ch.h>
+#include <hal.h>
+/*
+  Audio Driver: DAC
+  which utilizes the dac unit many STM32 are equipped with, to output a modulated waveform from samples stored in the dac_buffer_* array who are passed to the hardware through DMA
+  it is also possible to have a custom sample-LUT by implementing/overriding 'dac_value_generate'
+  this driver allows for multiple simultaneous tones to be played through one single channel by doing additive wave-synthesis
+*/
+#if !defined(AUDIO_PIN)
+#    error "Audio feature enabled, but no suitable pin selected as AUDIO_PIN - see docs/feature_audio under 'ARM (DAC additive)' for available options."
+#endif
+#if defined(AUDIO_PIN_ALT) && !defined(AUDIO_PIN_ALT_AS_NEGATIVE)
+#    pragma message "Audio feature: AUDIO_PIN_ALT set, but not AUDIO_PIN_ALT_AS_NEGATIVE - pin will be left unused; audio might still work though."
+#endif
+#if !defined(AUDIO_PIN_ALT)
+// no ALT pin defined is valid, but the c-ifs below need some value set
+#    define AUDIO_PIN_ALT PAL_NOLINE
+#endif
+#if !defined(AUDIO_DAC_SAMPLE_WAVEFORM_SINE) && !defined(AUDIO_DAC_SAMPLE_WAVEFORM_TRIANGLE) && !defined(AUDIO_DAC_SAMPLE_WAVEFORM_SQUARE) && !defined(AUDIO_DAC_SAMPLE_WAVEFORM_TRAPEZOID)
+#    define AUDIO_DAC_SAMPLE_WAVEFORM_SINE
+#endif
+#ifdef AUDIO_DAC_SAMPLE_WAVEFORM_SINE
+/* one full sine wave over [0,2*pi], but shifted up one amplitude and left pi/4; for the samples to start at 0
+ */
+static const dacsample_t dac_buffer_sine[AUDIO_DAC_BUFFER_SIZE] = {
+    // 256 values, max 4095
+    0x0,   0x1,   0x2,   0x6,   0xa,   0xf,   0x16,  0x1e,  0x27,  0x32,  0x3d,  0x4a,  0x58,  0x67,  0x78,  0x89,  0x9c,  0xb0,  0xc5,  0xdb,  0xf2,  0x10a, 0x123, 0x13e, 0x159, 0x175, 0x193, 0x1b1, 0x1d1, 0x1f1, 0x212, 0x235, 0x258, 0x27c, 0x2a0, 0x2c6, 0x2ed, 0x314, 0x33c, 0x365, 0x38e, 0x3b8, 0x3e3, 0x40e, 0x43a, 0x467, 0x494, 0x4c2, 0x4f0, 0x51f, 0x54e, 0x57d, 0x5ad, 0x5dd, 0x60e, 0x63f, 0x670, 0x6a1, 0x6d3, 0x705, 0x737, 0x769, 0x79b, 0x7cd, 0x800, 0x832, 0x864, 0x896, 0x8c8, 0x8fa, 0x92c, 0x95e, 0x98f, 0x9c0, 0x9f1, 0xa22, 0xa52, 0xa82, 0xab1, 0xae0, 0xb0f, 0xb3d, 0xb6b, 0xb98, 0xbc5, 0xbf1, 0xc1c, 0xc47, 0xc71, 0xc9a, 0xcc3, 0xceb, 0xd12, 0xd39, 0xd5f, 0xd83, 0xda7, 0xdca, 0xded, 0xe0e, 0xe2e, 0xe4e, 0xe6c, 0xe8a, 0xea6, 0xec1, 0xedc, 0xef5, 0xf0d, 0xf24, 0xf3a, 0xf4f, 0xf63, 0xf76, 0xf87, 0xf98, 0xfa7, 0xfb5, 0xfc2, 0xfcd, 0xfd8, 0xfe1, 0xfe9, 0xff0, 0xff5, 0xff9, 0xffd, 0xffe,
+    0xfff, 0xffe, 0xffd, 0xff9, 0xff5, 0xff0, 0xfe9, 0xfe1, 0xfd8, 0xfcd, 0xfc2, 0xfb5, 0xfa7, 0xf98, 0xf87, 0xf76, 0xf63, 0xf4f, 0xf3a, 0xf24, 0xf0d, 0xef5, 0xedc, 0xec1, 0xea6, 0xe8a, 0xe6c, 0xe4e, 0xe2e, 0xe0e, 0xded, 0xdca, 0xda7, 0xd83, 0xd5f, 0xd39, 0xd12, 0xceb, 0xcc3, 0xc9a, 0xc71, 0xc47, 0xc1c, 0xbf1, 0xbc5, 0xb98, 0xb6b, 0xb3d, 0xb0f, 0xae0, 0xab1, 0xa82, 0xa52, 0xa22, 0x9f1, 0x9c0, 0x98f, 0x95e, 0x92c, 0x8fa, 0x8c8, 0x896, 0x864, 0x832, 0x800, 0x7cd, 0x79b, 0x769, 0x737, 0x705, 0x6d3, 0x6a1, 0x670, 0x63f, 0x60e, 0x5dd, 0x5ad, 0x57d, 0x54e, 0x51f, 0x4f0, 0x4c2, 0x494, 0x467, 0x43a, 0x40e, 0x3e3, 0x3b8, 0x38e, 0x365, 0x33c, 0x314, 0x2ed, 0x2c6, 0x2a0, 0x27c, 0x258, 0x235, 0x212, 0x1f1, 0x1d1, 0x1b1, 0x193, 0x175, 0x159, 0x13e, 0x123, 0x10a, 0xf2,  0xdb,  0xc5,  0xb0,  0x9c,  0x89,  0x78,  0x67,  0x58,  0x4a,  0x3d,  0x32,  0x27,  0x1e,  0x16,  0xf,   0xa,   0x6,   0x2,   0x1};
+#endif  // AUDIO_DAC_SAMPLE_WAVEFORM_SINE
+#ifdef AUDIO_DAC_SAMPLE_WAVEFORM_TRIANGLE
+static const dacsample_t dac_buffer_triangle[AUDIO_DAC_BUFFER_SIZE] = {
+    // 256 values, max 4095
+    0x0,   0x20,  0x40,  0x60,  0x80,  0xa0,  0xc0,  0xe0,  0x100, 0x120, 0x140, 0x160, 0x180, 0x1a0, 0x1c0, 0x1e0, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0x300, 0x320, 0x340, 0x360, 0x380, 0x3a0, 0x3c0, 0x3e0, 0x400, 0x420, 0x440, 0x460, 0x480, 0x4a0, 0x4c0, 0x4e0, 0x500, 0x520, 0x540, 0x560, 0x580, 0x5a0, 0x5c0, 0x5e0, 0x600, 0x620, 0x640, 0x660, 0x680, 0x6a0, 0x6c0, 0x6e0, 0x700, 0x720, 0x740, 0x760, 0x780, 0x7a0, 0x7c0, 0x7e0, 0x800, 0x81f, 0x83f, 0x85f, 0x87f, 0x89f, 0x8bf, 0x8df, 0x8ff, 0x91f, 0x93f, 0x95f, 0x97f, 0x99f, 0x9bf, 0x9df, 0x9ff, 0xa1f, 0xa3f, 0xa5f, 0xa7f, 0xa9f, 0xabf, 0xadf, 0xaff, 0xb1f, 0xb3f, 0xb5f, 0xb7f, 0xb9f, 0xbbf, 0xbdf, 0xbff, 0xc1f, 0xc3f, 0xc5f, 0xc7f, 0xc9f, 0xcbf, 0xcdf, 0xcff, 0xd1f, 0xd3f, 0xd5f, 0xd7f, 0xd9f, 0xdbf, 0xddf, 0xdff, 0xe1f, 0xe3f, 0xe5f, 0xe7f, 0xe9f, 0xebf, 0xedf, 0xeff, 0xf1f, 0xf3f, 0xf5f, 0xf7f, 0xf9f, 0xfbf, 0xfdf,
+    0xfff, 0xfdf, 0xfbf, 0xf9f, 0xf7f, 0xf5f, 0xf3f, 0xf1f, 0xeff, 0xedf, 0xebf, 0xe9f, 0xe7f, 0xe5f, 0xe3f, 0xe1f, 0xdff, 0xddf, 0xdbf, 0xd9f, 0xd7f, 0xd5f, 0xd3f, 0xd1f, 0xcff, 0xcdf, 0xcbf, 0xc9f, 0xc7f, 0xc5f, 0xc3f, 0xc1f, 0xbff, 0xbdf, 0xbbf, 0xb9f, 0xb7f, 0xb5f, 0xb3f, 0xb1f, 0xaff, 0xadf, 0xabf, 0xa9f, 0xa7f, 0xa5f, 0xa3f, 0xa1f, 0x9ff, 0x9df, 0x9bf, 0x99f, 0x97f, 0x95f, 0x93f, 0x91f, 0x8ff, 0x8df, 0x8bf, 0x89f, 0x87f, 0x85f, 0x83f, 0x81f, 0x800, 0x7e0, 0x7c0, 0x7a0, 0x780, 0x760, 0x740, 0x720, 0x700, 0x6e0, 0x6c0, 0x6a0, 0x680, 0x660, 0x640, 0x620, 0x600, 0x5e0, 0x5c0, 0x5a0, 0x580, 0x560, 0x540, 0x520, 0x500, 0x4e0, 0x4c0, 0x4a0, 0x480, 0x460, 0x440, 0x420, 0x400, 0x3e0, 0x3c0, 0x3a0, 0x380, 0x360, 0x340, 0x320, 0x300, 0x2e0, 0x2c0, 0x2a0, 0x280, 0x260, 0x240, 0x220, 0x200, 0x1e0, 0x1c0, 0x1a0, 0x180, 0x160, 0x140, 0x120, 0x100, 0xe0,  0xc0,  0xa0,  0x80,  0x60,  0x40,  0x20};
+#endif  // AUDIO_DAC_SAMPLE_WAVEFORM_TRIANGLE
+#ifdef AUDIO_DAC_SAMPLE_WAVEFORM_SQUARE
+static const dacsample_t dac_buffer_square[AUDIO_DAC_BUFFER_SIZE] = {
+    [0 ... AUDIO_DAC_BUFFER_SIZE / 2 - 1]                     = 0,                     // first and
+    [AUDIO_DAC_BUFFER_SIZE / 2 ... AUDIO_DAC_BUFFER_SIZE - 1] = AUDIO_DAC_SAMPLE_MAX,  // second half
+};
+#endif  // AUDIO_DAC_SAMPLE_WAVEFORM_SQUARE
+/*
+// four steps: 0, 1/3, 2/3 and 1
+static const dacsample_t dac_buffer_staircase[AUDIO_DAC_BUFFER_SIZE] = {
+    [0 ... AUDIO_DAC_BUFFER_SIZE/3 -1 ]                               = 0,
+    [AUDIO_DAC_BUFFER_SIZE / 4 ... AUDIO_DAC_BUFFER_SIZE / 2 -1 ]     = AUDIO_DAC_SAMPLE_MAX / 3,
+    [AUDIO_DAC_BUFFER_SIZE / 2 ... 3 * AUDIO_DAC_BUFFER_SIZE / 4 -1 ] = 2 * AUDIO_DAC_SAMPLE_MAX / 3,
+    [3 * AUDIO_DAC_BUFFER_SIZE / 4 ... AUDIO_DAC_BUFFER_SIZE -1 ]     = AUDIO_DAC_SAMPLE_MAX,
+}
+*/
+#ifdef AUDIO_DAC_SAMPLE_WAVEFORM_TRAPEZOID
+static const dacsample_t dac_buffer_trapezoid[AUDIO_DAC_BUFFER_SIZE] = {0x0,   0x1f,  0x7f,  0xdf,  0x13f, 0x19f, 0x1ff, 0x25f, 0x2bf, 0x31f, 0x37f, 0x3df, 0x43f, 0x49f, 0x4ff, 0x55f, 0x5bf, 0x61f, 0x67f, 0x6df, 0x73f, 0x79f, 0x7ff, 0x85f, 0x8bf, 0x91f, 0x97f, 0x9df, 0xa3f, 0xa9f, 0xaff, 0xb5f, 0xbbf, 0xc1f, 0xc7f, 0xcdf, 0xd3f, 0xd9f, 0xdff, 0xe5f, 0xebf, 0xf1f, 0xf7f, 0xfdf, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff, 0xfff,
+                                                                        0xfff, 0xfdf, 0xf7f, 0xf1f, 0xebf, 0xe5f, 0xdff, 0xd9f, 0xd3f, 0xcdf, 0xc7f, 0xc1f, 0xbbf, 0xb5f, 0xaff, 0xa9f, 0xa3f, 0x9df, 0x97f, 0x91f, 0x8bf, 0x85f, 0x7ff, 0x79f, 0x73f, 0x6df, 0x67f, 0x61f, 0x5bf, 0x55f, 0x4ff, 0x49f, 0x43f, 0x3df, 0x37f, 0x31f, 0x2bf, 0x25f, 0x1ff, 0x19f, 0x13f, 0xdf,  0x7f,  0x1f,  0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0,   0x0};
+#endif  // AUDIO_DAC_SAMPLE_WAVEFORM_TRAPEZOID
+static dacsample_t dac_buffer_empty[AUDIO_DAC_BUFFER_SIZE] = {AUDIO_DAC_OFF_VALUE};
+/* keep track of the sample position for for each frequency */
+static float dac_if[AUDIO_MAX_SIMULTANEOUS_TONES] = {0.0};
+static float   active_tones_snapshot[AUDIO_MAX_SIMULTANEOUS_TONES] = {0, 0};
+static uint8_t active_tones_snapshot_length                        = 0;
+typedef enum {
+    OUTPUT_SHOULD_START,
+    OUTPUT_RUN_NORMALLY,
+    // path 1: wait for zero, then change/update active tones
+    OUTPUT_TONES_CHANGED,
+    OUTPUT_REACHED_ZERO_BEFORE_TONE_CHANGE,
+    // path 2: hardware should stop, wait for zero then turn output off = stop the timer
+    OUTPUT_SHOULD_STOP,
+    OUTPUT_REACHED_ZERO_BEFORE_OFF,
+    OUTPUT_OFF,
+    OUTPUT_OFF_1,
+    OUTPUT_OFF_2,  // trailing off: giving the DAC two more conversion cycles until the AUDIO_DAC_OFF_VALUE reaches the output, then turn the timer off, which leaves the output at that level
+    number_of_output_states
+} output_states_t;
+output_states_t state = OUTPUT_OFF_2;
+/**
+ * Generation of the waveform being passed to the callback. Declared weak so users
+ * can override it with their own wave-forms/noises.
+ */
+__attribute__((weak)) uint16_t dac_value_generate(void) {
+    // DAC is running/asking for values but snapshot length is zero -> must be playing a pause
+    if (active_tones_snapshot_length == 0) {
+        return AUDIO_DAC_OFF_VALUE;
+    }
+    /* doing additive wave synthesis over all currently playing tones = adding up
+     * sine-wave-samples for each frequency, scaled by the number of active tones
+     */
+    uint16_t value     = 0;
+    float    frequency = 0.0f;
+    for (uint8_t i = 0; i < active_tones_snapshot_length; i++) {
+        /* Note: a user implementation does not have to rely on the active_tones_snapshot, but
+         * could directly query the active frequencies through audio_get_processed_frequency */
+        frequency = active_tones_snapshot[i];
+        dac_if[i] = dac_if[i] + ((frequency * AUDIO_DAC_BUFFER_SIZE) / AUDIO_DAC_SAMPLE_RATE) * 2 / 3;
+        /*Note: the 2/3 are necessary to get the correct frequencies on the
+         *      DAC output (as measured with an oscilloscope), since the gpt
+         *      timer runs with 3*AUDIO_DAC_SAMPLE_RATE; and the DAC callback
+         *      is called twice per conversion.*/
+        dac_if[i] = fmod(dac_if[i], AUDIO_DAC_BUFFER_SIZE);
+        // Wavetable generation/lookup
+        uint16_t dac_i = (uint16_t)dac_if[i];
+#if defined(AUDIO_DAC_SAMPLE_WAVEFORM_SINE)
+        value += dac_buffer_sine[dac_i] / active_tones_snapshot_length;
+#elif defined(AUDIO_DAC_SAMPLE_WAVEFORM_TRIANGLE)
+        value += dac_buffer_triangle[dac_i] / active_tones_snapshot_length;
+#elif defined(AUDIO_DAC_SAMPLE_WAVEFORM_TRAPEZOID)
+        value += dac_buffer_trapezoid[dac_i] / active_tones_snapshot_length;
+#elif defined(AUDIO_DAC_SAMPLE_WAVEFORM_SQUARE)
+        value += dac_buffer_square[dac_i] / active_tones_snapshot_length;
+#endif
+        /*
+        // SINE
+        value += dac_buffer_sine[dac_i] / active_tones_snapshot_length / 3;
+        // TRIANGLE
+        value += dac_buffer_triangle[dac_i] / active_tones_snapshot_length / 3;
+        // SQUARE
+        value += dac_buffer_square[dac_i] / active_tones_snapshot_length / 3;
+        //NOTE: combination of these three wave-forms is more exemplary - and doesn't sound particularly good :-P
+        */
+        // STAIRS (mostly usefully as test-pattern)
+        // value_avg = dac_buffer_staircase[dac_i] / active_tones_snapshot_length;
+    }
+    return value;
+}
+/**
+ * DAC streaming callback. Does all of the main computing for playing songs.
+ *
+ * Note: chibios calls this CB twice: during the 'half buffer event', and the 'full buffer event'.
+ */
+static void dac_end(DACDriver *dacp) {
+    dacsample_t *sample_p = (dacp)->samples;
+    // work on the other half of the buffer
+    if (dacIsBufferComplete(dacp)) {
+        sample_p += AUDIO_DAC_BUFFER_SIZE / 2;  // 'half_index'
+    }
+    for (uint8_t s = 0; s < AUDIO_DAC_BUFFER_SIZE / 2; s++) {
+        if (OUTPUT_OFF <= state) {
+            sample_p[s] = AUDIO_DAC_OFF_VALUE;
+            continue;
+        } else {
+            sample_p[s] = dac_value_generate();
+        }
+        /* zero crossing (or approach, whereas zero == DAC_OFF_VALUE, which can be configured to anything from 0 to DAC_SAMPLE_MAX)
+         * ============================*=*========================== AUDIO_DAC_SAMPLE_MAX
+         *                          *       *
+         *                        *           *
+         * ---------------------------------------------------------
+         *                     *                 *                  } AUDIO_DAC_SAMPLE_MAX/100
+         * --------------------------------------------------------- AUDIO_DAC_OFF_VALUE
+         *                  *                       *               } AUDIO_DAC_SAMPLE_MAX/100
+         * ---------------------------------------------------------
+         *               *
+         * *           *
+         *   *       *
+         * =====*=*================================================= 0x0
+         */
+        if (((sample_p[s] + (AUDIO_DAC_SAMPLE_MAX / 100)) > AUDIO_DAC_OFF_VALUE) &&  // value approaches from below
+            (sample_p[s] < (AUDIO_DAC_OFF_VALUE + (AUDIO_DAC_SAMPLE_MAX / 100)))     // or above
+        ) {
+            if ((OUTPUT_SHOULD_START == state) && (active_tones_snapshot_length > 0)) {
+                state = OUTPUT_RUN_NORMALLY;
+            } else if (OUTPUT_TONES_CHANGED == state) {
+                state = OUTPUT_REACHED_ZERO_BEFORE_TONE_CHANGE;
+            } else if (OUTPUT_SHOULD_STOP == state) {
+                state = OUTPUT_REACHED_ZERO_BEFORE_OFF;
+            }
+        }
+        // still 'ramping up', reset the output to OFF_VALUE until the generated values reach that value, to do a smooth handover
+        if (OUTPUT_SHOULD_START == state) {
+            sample_p[s] = AUDIO_DAC_OFF_VALUE;
+        }
+        if ((OUTPUT_SHOULD_START == state) || (OUTPUT_REACHED_ZERO_BEFORE_OFF == state) || (OUTPUT_REACHED_ZERO_BEFORE_TONE_CHANGE == state)) {
+            uint8_t active_tones         = MIN(AUDIO_MAX_SIMULTANEOUS_TONES, audio_get_number_of_active_tones());
+            active_tones_snapshot_length = 0;
+            // update the snapshot - once, and only on occasion that something changed;
+            // -> saves cpu cycles (?)
+            for (uint8_t i = 0; i < active_tones; i++) {
+                float freq = audio_get_processed_frequency(i);
+                if (freq > 0) {  // disregard 'rest' notes, with valid frequency 0.0f; which would only lower the resulting waveform volume during the additive synthesis step
+                    active_tones_snapshot[active_tones_snapshot_length++] = freq;
+                }
+            }
+            if ((0 == active_tones_snapshot_length) && (OUTPUT_REACHED_ZERO_BEFORE_OFF == state)) {
+                state = OUTPUT_OFF;
+            }
+            if (OUTPUT_REACHED_ZERO_BEFORE_TONE_CHANGE == state) {
+                state = OUTPUT_RUN_NORMALLY;
+            }
+        }
+    }
+    // update audio internal state (note position, current_note, ...)
+    if (audio_update_state()) {
+        if (OUTPUT_SHOULD_STOP != state) {
+            state = OUTPUT_TONES_CHANGED;
+        }
+    }
+    if (OUTPUT_OFF <= state) {
+        if (OUTPUT_OFF_2 == state) {
+            // stopping timer6 = stopping the DAC at whatever value it is currently pushing to the output = AUDIO_DAC_OFF_VALUE
+            gptStopTimer(&GPTD6);
+        } else {
+            state++;
+        }
+    }
+}
+static void dac_error(DACDriver *dacp, dacerror_t err) {
+    (void)dacp;
+    (void)err;
+    chSysHalt("DAC failure. halp");
+}
+static const GPTConfig gpt6cfg1 = {.frequency = AUDIO_DAC_SAMPLE_RATE * 3,
+                                   .callback  = NULL,
+                                   .cr2       = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event.  */
+                                   .dier      = 0U};
+static const DACConfig dac_conf = {.init = AUDIO_DAC_OFF_VALUE, .datamode = DAC_DHRM_12BIT_RIGHT};
+/**
+ * @note The DAC_TRG(0) here selects the Timer 6 TRGO event, which is triggered
+ * on the rising edge after 3 APB1 clock cycles, causing our gpt6cfg1.frequency
+ * to be a third of what we expect.
+ *
+ * Here are all the values for DAC_TRG (TSEL in the ref manual)
+ * TIM15_TRGO 0b011
+ * TIM2_TRGO  0b100
+ * TIM3_TRGO  0b001
+ * TIM6_TRGO  0b000
+ * TIM7_TRGO  0b010
+ * EXTI9      0b110
+ * SWTRIG     0b111
+ */
+static const DACConversionGroup dac_conv_cfg = {.num_channels = 1U, .end_cb = dac_end, .error_cb = dac_error, .trigger = DAC_TRG(0b000)};
+void audio_driver_initialize() {
+    if ((AUDIO_PIN == A4) || (AUDIO_PIN_ALT == A4)) {
+        palSetLineMode(A4, PAL_MODE_INPUT_ANALOG);
+        dacStart(&DACD1, &dac_conf);
+    }
+    if ((AUDIO_PIN == A5) || (AUDIO_PIN_ALT == A5)) {
+        palSetLineMode(A5, PAL_MODE_INPUT_ANALOG);
+        dacStart(&DACD2, &dac_conf);
+    }
+    /* enable the output buffer, to directly drive external loads with no additional circuitry
+     *
+     * see: AN4566 Application note: Extending the DAC performance of STM32 microcontrollers
+     * Note: Buffer-Off bit -> has to be set 0 to enable the output buffer
+     * Note: enabling the output buffer imparts an additional dc-offset of a couple mV
+     *
+     * this is done here, reaching directly into the stm32 registers since chibios has not implemented BOFF handling yet
+     * (see: chibios/os/hal/ports/STM32/todo.txt '- BOFF handling in DACv1.'
+     */
+    DACD1.params->dac->CR &= ~DAC_CR_BOFF1;
+    DACD2.params->dac->CR &= ~DAC_CR_BOFF2;
+    if (AUDIO_PIN == A4) {
+        dacStartConversion(&DACD1, &dac_conv_cfg, dac_buffer_empty, AUDIO_DAC_BUFFER_SIZE);
+    } else if (AUDIO_PIN == A5) {
+        dacStartConversion(&DACD2, &dac_conv_cfg, dac_buffer_empty, AUDIO_DAC_BUFFER_SIZE);
+    }
+    // no inverted/out-of-phase waveform (yet?), only pulling AUDIO_PIN_ALT to AUDIO_DAC_OFF_VALUE
+#if defined(AUDIO_PIN_ALT_AS_NEGATIVE)
+    if (AUDIO_PIN_ALT == A4) {
+        dacPutChannelX(&DACD1, 0, AUDIO_DAC_OFF_VALUE);
+    } else if (AUDIO_PIN_ALT == A5) {
+        dacPutChannelX(&DACD2, 0, AUDIO_DAC_OFF_VALUE);
+    }
+#endif
+    gptStart(&GPTD6, &gpt6cfg1);
+}
+void audio_driver_stop(void) { state = OUTPUT_SHOULD_STOP; }
+void audio_driver_start(void) {
+    gptStartContinuous(&GPTD6, 2U);
+    for (uint8_t i = 0; i < AUDIO_MAX_SIMULTANEOUS_TONES; i++) {
+        dac_if[i]                = 0.0f;
+        active_tones_snapshot[i] = 0.0f;
+    }
+    active_tones_snapshot_length = 0;
+    state                        = OUTPUT_SHOULD_START;
+}
diff --git a/quantum/audio/driver_chibios_dac_basic.c b/quantum/audio/driver_chibios_dac_basic.c
new file mode 100644
index 000000000..9a1c9a8c1
--- /dev/null
+++ b/quantum/audio/driver_chibios_dac_basic.c
@@ -0,0 +1,245 @@
+/* Copyright 2016-2020 Jack Humbert
+ * Copyright 2020 JohSchneider
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#include "audio.h"
+#include "ch.h"
+#include "hal.h"
+/*
+  Audio Driver: DAC
+  which utilizes both channels of the DAC unit many STM32 are equipped with to output a modulated square-wave, from precomputed samples stored in a buffer, which is passed to the hardware through DMA
+  this driver can either be used to drive to separate speakers, wired to A4+Gnd and A5+Gnd, which allows two tones to be played simultaneously
+  OR
+  one speaker wired to A4+A5 with the AUDIO_PIN_ALT_AS_NEGATIVE define set - see docs/feature_audio
+*/
+#if !defined(AUDIO_PIN)
+#    pragma message "Audio feature enabled, but no suitable pin selected as AUDIO_PIN - see docs/feature_audio under 'ARM (DAC basic)' for available options."
+// TODO: make this an 'error' instead; go through a breaking change, and add AUDIO_PIN A5 to all keyboards currently using AUDIO on STM32 based boards? - for now: set the define here
+#    define AUDIO_PIN A5
+#endif
+// check configuration for ONE speaker, connected to both DAC pins
+#if defined(AUDIO_PIN_ALT_AS_NEGATIVE) && !defined(AUDIO_PIN_ALT)
+#    error "Audio feature: AUDIO_PIN_ALT_AS_NEGATIVE set, but no pin configured as AUDIO_PIN_ALT"
+#endif
+#ifndef AUDIO_PIN_ALT
+// no ALT pin defined is valid, but the c-ifs below need some value set
+#    define AUDIO_PIN_ALT -1
+#endif
+#if !defined(AUDIO_STATE_TIMER)
+#    define AUDIO_STATE_TIMER GPTD8
+#endif
+// square-wave
+static const dacsample_t dac_buffer_1[AUDIO_DAC_BUFFER_SIZE] = {
+    // First half is max, second half is 0
+    [0 ... AUDIO_DAC_BUFFER_SIZE / 2 - 1]                     = AUDIO_DAC_SAMPLE_MAX,
+    [AUDIO_DAC_BUFFER_SIZE / 2 ... AUDIO_DAC_BUFFER_SIZE - 1] = 0,
+};
+// square-wave
+static const dacsample_t dac_buffer_2[AUDIO_DAC_BUFFER_SIZE] = {
+    // opposite of dac_buffer above
+    [0 ... AUDIO_DAC_BUFFER_SIZE / 2 - 1]                     = 0,
+    [AUDIO_DAC_BUFFER_SIZE / 2 ... AUDIO_DAC_BUFFER_SIZE - 1] = AUDIO_DAC_SAMPLE_MAX,
+};
+GPTConfig gpt6cfg1 = {.frequency = AUDIO_DAC_SAMPLE_RATE,
+                      .callback  = NULL,
+                      .cr2       = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event.    */
+                      .dier      = 0U};
+GPTConfig gpt7cfg1 = {.frequency = AUDIO_DAC_SAMPLE_RATE,
+                      .callback  = NULL,
+                      .cr2       = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event.    */
+                      .dier      = 0U};
+static void gpt_audio_state_cb(GPTDriver *gptp);
+GPTConfig   gptStateUpdateCfg = {.frequency = 10,
+                      .callback  = gpt_audio_state_cb,
+                      .cr2       = TIM_CR2_MMS_1, /* MMS = 010 = TRGO on Update Event.    */
+                      .dier      = 0U};
+static const DACConfig dac_conf_ch1 = {.init = AUDIO_DAC_OFF_VALUE, .datamode = DAC_DHRM_12BIT_RIGHT};
+static const DACConfig dac_conf_ch2 = {.init = AUDIO_DAC_OFF_VALUE, .datamode = DAC_DHRM_12BIT_RIGHT};
+/**
+ * @note The DAC_TRG(0) here selects the Timer 6 TRGO event, which is triggered
+ * on the rising edge after 3 APB1 clock cycles, causing our gpt6cfg1.frequency
+ * to be a third of what we expect.
+ *
+ * Here are all the values for DAC_TRG (TSEL in the ref manual)
+ * TIM15_TRGO 0b011
+ * TIM2_TRGO  0b100
+ * TIM3_TRGO  0b001
+ * TIM6_TRGO  0b000
+ * TIM7_TRGO  0b010
+ * EXTI9      0b110
+ * SWTRIG     0b111
+ */
+static const DACConversionGroup dac_conv_grp_ch1 = {.num_channels = 1U, .trigger = DAC_TRG(0b000)};
+static const DACConversionGroup dac_conv_grp_ch2 = {.num_channels = 1U, .trigger = DAC_TRG(0b010)};
+void channel_1_start(void) {
+    gptStart(&GPTD6, &gpt6cfg1);
+    gptStartContinuous(&GPTD6, 2U);
+    palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_ANALOG);
+}
+void channel_1_stop(void) {
+    gptStopTimer(&GPTD6);
+    palSetPadMode(GPIOA, 4, PAL_MODE_OUTPUT_PUSHPULL);
+    palSetPad(GPIOA, 4);
+}
+static float channel_1_frequency = 0.0f;
+void         channel_1_set_frequency(float freq) {
+    channel_1_frequency = freq;
+    channel_1_stop();
+    if (freq <= 0.0)  // a pause/rest has freq=0
+        return;
+    gpt6cfg1.frequency = 2 * freq * AUDIO_DAC_BUFFER_SIZE;
+    channel_1_start();
+}
+float channel_1_get_frequency(void) { return channel_1_frequency; }
+void channel_2_start(void) {
+    gptStart(&GPTD7, &gpt7cfg1);
+    gptStartContinuous(&GPTD7, 2U);
+    palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_ANALOG);
+}
+void channel_2_stop(void) {
+    gptStopTimer(&GPTD7);
+    palSetPadMode(GPIOA, 5, PAL_MODE_OUTPUT_PUSHPULL); \
+    palSetPad(GPIOA, 5);
+}
+static float channel_2_frequency = 0.0f;
+void         channel_2_set_frequency(float freq) {
+    channel_2_frequency = freq;
+    channel_2_stop();
+    if (freq <= 0.0)  // a pause/rest has freq=0
+        return;
+    gpt7cfg1.frequency = 2 * freq * AUDIO_DAC_BUFFER_SIZE;
+    channel_2_start();
+}
+float channel_2_get_frequency(void) { return channel_2_frequency; }
+static void gpt_audio_state_cb(GPTDriver *gptp) {
+    if (audio_update_state()) {
+#if defined(AUDIO_PIN_ALT_AS_NEGATIVE)
+        // one piezo/speaker connected to both audio pins, the generated square-waves are inverted
+        channel_1_set_frequency(audio_get_processed_frequency(0));
+        channel_2_set_frequency(audio_get_processed_frequency(0));
+#else  // two separate audio outputs/speakers
+       // primary speaker on A4, optional secondary on A5
+        if (AUDIO_PIN == A4) {
+            channel_1_set_frequency(audio_get_processed_frequency(0));
+            if (AUDIO_PIN_ALT == A5) {
+                if (audio_get_number_of_active_tones() > 1) {
+                    channel_2_set_frequency(audio_get_processed_frequency(1));
+                } else {
+                    channel_2_stop();
+                }
+            }
+        }
+        // primary speaker on A5, optional secondary on A4
+        if (AUDIO_PIN == A5) {
+            channel_2_set_frequency(audio_get_processed_frequency(0));
+            if (AUDIO_PIN_ALT == A4) {
+                if (audio_get_number_of_active_tones() > 1) {
+                    channel_1_set_frequency(audio_get_processed_frequency(1));
+                } else {
+                    channel_1_stop();
+                }
+            }
+        }
+#endif
+    }
+}
+void audio_driver_initialize() {
+    if ((AUDIO_PIN == A4) || (AUDIO_PIN_ALT == A4)) {
+        palSetPadMode(GPIOA, 4, PAL_MODE_INPUT_ANALOG);
+        dacStart(&DACD1, &dac_conf_ch1);
+        // initial setup of the dac-triggering timer is still required, even
+        // though it gets reconfigured and restarted later on
+        gptStart(&GPTD6, &gpt6cfg1);
+    }
+    if ((AUDIO_PIN == A5) || (AUDIO_PIN_ALT == A5)) {
+        palSetPadMode(GPIOA, 5, PAL_MODE_INPUT_ANALOG);
+        dacStart(&DACD2, &dac_conf_ch2);
+        gptStart(&GPTD7, &gpt7cfg1);
+    }
+    /* enable the output buffer, to directly drive external loads with no additional circuitry
+     *
+     * see: AN4566 Application note: Extending the DAC performance of STM32 microcontrollers
+     * Note: Buffer-Off bit -> has to be set 0 to enable the output buffer
+     * Note: enabling the output buffer imparts an additional dc-offset of a couple mV
+     *
+     * this is done here, reaching directly into the stm32 registers since chibios has not implemented BOFF handling yet
+     * (see: chibios/os/hal/ports/STM32/todo.txt '- BOFF handling in DACv1.'
+     */
+    DACD1.params->dac->CR &= ~DAC_CR_BOFF1;
+    DACD2.params->dac->CR &= ~DAC_CR_BOFF2;
+    // start state-updater
+    gptStart(&AUDIO_STATE_TIMER, &gptStateUpdateCfg);
+}
+void audio_driver_stop(void) {
+    if ((AUDIO_PIN == A4) || (AUDIO_PIN_ALT == A4)) {
+        gptStopTimer(&GPTD6);
+        // stop the ongoing conversion and put the output in a known state
+        dacStopConversion(&DACD1);
+        dacPutChannelX(&DACD1, 0, AUDIO_DAC_OFF_VALUE);
+    }
+    if ((AUDIO_PIN == A5) || (AUDIO_PIN_ALT == A5)) {
+        gptStopTimer(&GPTD7);
+        dacStopConversion(&DACD2);
+        dacPutChannelX(&DACD2, 0, AUDIO_DAC_OFF_VALUE);
+    }
+    gptStopTimer(&AUDIO_STATE_TIMER);
+}
+void audio_driver_start(void) {
+    if ((AUDIO_PIN == A4) || (AUDIO_PIN_ALT == A4)) {
+        dacStartConversion(&DACD1, &dac_conv_grp_ch1, (dacsample_t *)dac_buffer_1, AUDIO_DAC_BUFFER_SIZE);
+    }
+    if ((AUDIO_PIN == A5) || (AUDIO_PIN_ALT == A5)) {
+        dacStartConversion(&DACD2, &dac_conv_grp_ch2, (dacsample_t *)dac_buffer_2, AUDIO_DAC_BUFFER_SIZE);
+    }
+    gptStartContinuous(&AUDIO_STATE_TIMER, 2U);
+}
diff --git a/quantum/audio/driver_chibios_pwm.h b/quantum/audio/driver_chibios_pwm.h
new file mode 100644
index 000000000..86cab916e
--- /dev/null
+++ b/quantum/audio/driver_chibios_pwm.h
@@ -0,0 +1,40 @@
+/* Copyright 2020 Jack Humbert
+ * Copyright 2020 JohSchneider
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#pragma once
+#if !defined(AUDIO_PWM_DRIVER)
+// NOTE: Timer2 seems to be used otherwise in QMK, otherwise we could default to A5 (= TIM2_CH1, with PWMD2 and alternate-function(1))
+#    define AUDIO_PWM_DRIVER PWMD1
+#endif
+#if !defined(AUDIO_PWM_CHANNEL)
+// NOTE: sticking to the STM data-sheet numbering: TIMxCH1 to TIMxCH4
+// default: STM32F303CC PA8+TIM1_CH1 -> 1
+#    define AUDIO_PWM_CHANNEL 1
+#endif
+#if !defined(AUDIO_PWM_PAL_MODE)
+// pin-alternate function: see the data-sheet for which pin needs what AF to connect to TIMx_CHy
+// default: STM32F303CC PA8+TIM1_CH1 -> 6
+#    define AUDIO_PWM_PAL_MODE 6
+#endif
+#if !defined(AUDIO_STATE_TIMER)
+// timer used to trigger updates in the audio-system, configured/enabled in chibios mcuconf.
+// Tim6 is the default for "larger" STMs, smaller ones might not have this one (enabled) and need to switch to a different one (e.g.: STM32F103 has only Tim1-Tim4)
+#    define AUDIO_STATE_TIMER GPTD6
+#endif
diff --git a/quantum/audio/driver_chibios_pwm_hardware.c b/quantum/audio/driver_chibios_pwm_hardware.c
new file mode 100644
index 000000000..3c7d89b29
--- /dev/null
+++ b/quantum/audio/driver_chibios_pwm_hardware.c
@@ -0,0 +1,144 @@
+/* Copyright 2020 Jack Humbert
+ * Copyright 2020 JohSchneider
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+/*
+Audio Driver: PWM
+the duty-cycle is always kept at 50%, and the pwm-period is adjusted to match the frequency of a note to be played back.
+this driver uses the chibios-PWM system to produce a square-wave on specific output pins that are connected to the PWM hardware.
+The hardware directly toggles the pin via its alternate function. see your MCUs data-sheet for which pin can be driven by what timer - looking for TIMx_CHy and the corresponding alternate function.
+ */
+#include "audio.h"
+#include "ch.h"
+#include "hal.h"
+#if !defined(AUDIO_PIN)
+#    error "Audio feature enabled, but no pin selected - see docs/feature_audio under the ARM PWM settings"
+#endif
+extern bool    playing_note;
+extern bool    playing_melody;
+extern uint8_t note_timbre;
+static PWMConfig pwmCFG = {
+    .frequency = 100000, /* PWM clock frequency  */
+    // CHIBIOS-BUG? can't set the initial period to <2, or the pwm (hard or software) takes ~130ms with .frequency=500000 for a pwmChangePeriod to take effect; with no output=silence in the meantime
+    .period   = 2,    /* initial PWM period (in ticks) 1S (1/10kHz=0.1mS 0.1ms*10000 ticks=1S) */
+    .callback = NULL, /* no callback, the hardware directly toggles the pin */
+    .channels =
+        {
+#if AUDIO_PWM_CHANNEL == 4
+            {PWM_OUTPUT_DISABLED, NULL},   /* channel 0 -> TIMx_CH1 */
+            {PWM_OUTPUT_DISABLED, NULL},   /* channel 1 -> TIMx_CH2 */
+            {PWM_OUTPUT_DISABLED, NULL},   /* channel 2 -> TIMx_CH3 */
+            {PWM_OUTPUT_ACTIVE_HIGH, NULL} /* channel 3 -> TIMx_CH4 */
+#elif AUDIO_PWM_CHANNEL == 3
+            {PWM_OUTPUT_DISABLED, NULL},
+            {PWM_OUTPUT_DISABLED, NULL},
+            {PWM_OUTPUT_ACTIVE_HIGH, NULL}, /* TIMx_CH3 */
+            {PWM_OUTPUT_DISABLED, NULL}
+#elif AUDIO_PWM_CHANNEL == 2
+            {PWM_OUTPUT_DISABLED, NULL},
+            {PWM_OUTPUT_ACTIVE_HIGH, NULL}, /* TIMx_CH2 */
+            {PWM_OUTPUT_DISABLED, NULL},
+            {PWM_OUTPUT_DISABLED, NULL}
+#else /*fallback to CH1 */
+            {PWM_OUTPUT_ACTIVE_HIGH, NULL}, /* TIMx_CH1 */
+            {PWM_OUTPUT_DISABLED, NULL},
+            {PWM_OUTPUT_DISABLED, NULL},
+            {PWM_OUTPUT_DISABLED, NULL}
+#endif
+        },
+};
+static float channel_1_frequency = 0.0f;
+void         channel_1_set_frequency(float freq) {
+    channel_1_frequency = freq;
+    if (freq <= 0.0)  // a pause/rest has freq=0
+        return;
+    pwmcnt_t period = (pwmCFG.frequency / freq);
+    pwmChangePeriod(&AUDIO_PWM_DRIVER, period);
+    pwmEnableChannel(&AUDIO_PWM_DRIVER, AUDIO_PWM_CHANNEL - 1,
+                     // adjust the duty-cycle so that the output is for 'note_timbre' duration HIGH
+                     PWM_PERCENTAGE_TO_WIDTH(&AUDIO_PWM_DRIVER, (100 - note_timbre) * 100));
+}
+float channel_1_get_frequency(void) { return channel_1_frequency; }
+void channel_1_start(void) {
+    pwmStop(&AUDIO_PWM_DRIVER);
+    pwmStart(&AUDIO_PWM_DRIVER, &pwmCFG);
+}
+void channel_1_stop(void) { pwmStop(&AUDIO_PWM_DRIVER); }
+static void gpt_callback(GPTDriver *gptp);
+GPTConfig   gptCFG = {
+    /* a whole note is one beat, which is - per definition in musical_notes.h - set to 64
+       the longest note is BREAVE_DOT=128+64=192, the shortest SIXTEENTH=4
+       the tempo (which might vary!) is in bpm (beats per minute)
+       therefore: if the timer ticks away at .frequency = (60*64)Hz,
+       and the .interval counts from 64 downwards - audio_update_state is
+       called just often enough to not miss any notes
+    */
+    .frequency = 60 * 64,
+    .callback  = gpt_callback,
+};
+void audio_driver_initialize(void) {
+    pwmStart(&AUDIO_PWM_DRIVER, &pwmCFG);
+    // connect the AUDIO_PIN to the PWM hardware
+#if defined(USE_GPIOV1)  // STM32F103C8
+    palSetLineMode(AUDIO_PIN, PAL_MODE_STM32_ALTERNATE_PUSHPULL);
+#else  // GPIOv2 (or GPIOv3 for f4xx, which is the same/compatible at this command)
+    palSetLineMode(AUDIO_PIN, PAL_STM32_MODE_ALTERNATE | PAL_STM32_ALTERNATE(AUDIO_PWM_PAL_MODE));
+#endif
+    gptStart(&AUDIO_STATE_TIMER, &gptCFG);
+}
+void audio_driver_start(void) {
+    channel_1_stop();
+    channel_1_start();
+    if (playing_note || playing_melody) {
+        gptStartContinuous(&AUDIO_STATE_TIMER, 64);
+    }
+}
+void audio_driver_stop(void) {
+    channel_1_stop();
+    gptStopTimer(&AUDIO_STATE_TIMER);
+}
+/* a regular timer task, that checks the note to be currently played
+ * and updates the pwm to output that frequency
+ */
+static void gpt_callback(GPTDriver *gptp) {
+    float freq;  // TODO: freq_alt
+    if (audio_update_state()) {
+        freq = audio_get_processed_frequency(0);  // freq_alt would be index=1
+        channel_1_set_frequency(freq);
+    }
+}
diff --git a/quantum/audio/driver_chibios_pwm_software.c b/quantum/audio/driver_chibios_pwm_software.c
new file mode 100644
index 000000000..15c3e98b6
--- /dev/null
+++ b/quantum/audio/driver_chibios_pwm_software.c
@@ -0,0 +1,164 @@
+/* Copyright 2020 Jack Humbert
+ * Copyright 2020 JohSchneider
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+/*
+Audio Driver: PWM
+the duty-cycle is always kept at 50%, and the pwm-period is adjusted to match the frequency of a note to be played back.
+this driver uses the chibios-PWM system to produce a square-wave on any given output pin in software
+- a pwm callback is used to set/clear the configured pin.
+ */
+#include "audio.h"
+#include "ch.h"
+#include "hal.h"
+#if !defined(AUDIO_PIN)
+#    error "Audio feature enabled, but no pin selected - see docs/feature_audio under the ARM PWM settings"
+#endif
+extern bool    playing_note;
+extern bool    playing_melody;
+extern uint8_t note_timbre;
+static void pwm_audio_period_callback(PWMDriver *pwmp);
+static void pwm_audio_channel_interrupt_callback(PWMDriver *pwmp);
+static PWMConfig pwmCFG = {
+    .frequency = 100000, /* PWM clock frequency  */
+    // CHIBIOS-BUG? can't set the initial period to <2, or the pwm (hard or software) takes ~130ms with .frequency=500000 for a pwmChangePeriod to take effect; with no output=silence in the meantime
+    .period   = 2, /* initial PWM period (in ticks) 1S (1/10kHz=0.1mS 0.1ms*10000 ticks=1S) */
+    .callback = pwm_audio_period_callback,
+    .channels =
+        {
+            // software-PWM just needs another callback on any channel
+            {PWM_OUTPUT_ACTIVE_HIGH, pwm_audio_channel_interrupt_callback}, /* channel 0 -> TIMx_CH1 */
+            {PWM_OUTPUT_DISABLED, NULL},                                    /* channel 1 -> TIMx_CH2 */
+            {PWM_OUTPUT_DISABLED, NULL},                                    /* channel 2 -> TIMx_CH3 */
+            {PWM_OUTPUT_DISABLED, NULL}                                     /* channel 3 -> TIMx_CH4 */
+        },
+};
+static float channel_1_frequency = 0.0f;
+void         channel_1_set_frequency(float freq) {
+    channel_1_frequency = freq;
+    if (freq <= 0.0)  // a pause/rest has freq=0
+        return;
+    pwmcnt_t period = (pwmCFG.frequency / freq);
+    pwmChangePeriod(&AUDIO_PWM_DRIVER, period);
+    pwmEnableChannel(&AUDIO_PWM_DRIVER, AUDIO_PWM_CHANNEL - 1,
+                     // adjust the duty-cycle so that the output is for 'note_timbre' duration HIGH
+                     PWM_PERCENTAGE_TO_WIDTH(&AUDIO_PWM_DRIVER, (100 - note_timbre) * 100));
+}
+float channel_1_get_frequency(void) { return channel_1_frequency; }
+void channel_1_start(void) {
+    pwmStop(&AUDIO_PWM_DRIVER);
+    pwmStart(&AUDIO_PWM_DRIVER, &pwmCFG);
+    pwmEnablePeriodicNotification(&AUDIO_PWM_DRIVER);
+    pwmEnableChannelNotification(&AUDIO_PWM_DRIVER, AUDIO_PWM_CHANNEL - 1);
+}
+void channel_1_stop(void) {
+    pwmStop(&AUDIO_PWM_DRIVER);
+    palClearLine(AUDIO_PIN);  // leave the line low, after last note was played
+#if defined(AUDIO_PIN_ALT) && defined(AUDIO_PIN_ALT_AS_NEGATIVE)
+    palClearLine(AUDIO_PIN_ALT);  // leave the line low, after last note was played
+#endif
+}
+// generate a PWM signal on any pin, not necessarily the one connected to the timer
+static void pwm_audio_period_callback(PWMDriver *pwmp) {
+    (void)pwmp;
+    palClearLine(AUDIO_PIN);
+#if defined(AUDIO_PIN_ALT) && defined(AUDIO_PIN_ALT_AS_NEGATIVE)
+    palSetLine(AUDIO_PIN_ALT);
+#endif
+}
+static void pwm_audio_channel_interrupt_callback(PWMDriver *pwmp) {
+    (void)pwmp;
+    if (channel_1_frequency > 0) {
+        palSetLine(AUDIO_PIN);  // generate a PWM signal on any pin, not necessarily the one connected to the timer
+#if defined(AUDIO_PIN_ALT) && defined(AUDIO_PIN_ALT_AS_NEGATIVE)
+        palClearLine(AUDIO_PIN_ALT);
+#endif
+    }
+}
+static void gpt_callback(GPTDriver *gptp);
+GPTConfig   gptCFG = {
+    /* a whole note is one beat, which is - per definition in musical_notes.h - set to 64
+       the longest note is BREAVE_DOT=128+64=192, the shortest SIXTEENTH=4
+       the tempo (which might vary!) is in bpm (beats per minute)
+       therefore: if the timer ticks away at .frequency = (60*64)Hz,
+       and the .interval counts from 64 downwards - audio_update_state is
+       called just often enough to not miss anything
+    */
+    .frequency = 60 * 64,
+    .callback  = gpt_callback,
+};
+void audio_driver_initialize(void) {
+    pwmStart(&AUDIO_PWM_DRIVER, &pwmCFG);
+    palSetLineMode(AUDIO_PIN, PAL_MODE_OUTPUT_PUSHPULL);
+    palClearLine(AUDIO_PIN);
+#if defined(AUDIO_PIN_ALT) && defined(AUDIO_PIN_ALT_AS_NEGATIVE)
+    palSetLineMode(AUDIO_PIN_ALT, PAL_MODE_OUTPUT_PUSHPULL);
+    palClearLine(AUDIO_PIN_ALT);
+#endif
+    pwmEnablePeriodicNotification(&AUDIO_PWM_DRIVER);  // enable pwm callbacks
+    pwmEnableChannelNotification(&AUDIO_PWM_DRIVER, AUDIO_PWM_CHANNEL - 1);
+    gptStart(&AUDIO_STATE_TIMER, &gptCFG);
+}
+void audio_driver_start(void) {
+    channel_1_stop();
+    channel_1_start();
+    if (playing_note || playing_melody) {
+        gptStartContinuous(&AUDIO_STATE_TIMER, 64);
+    }
+}
+void audio_driver_stop(void) {
+    channel_1_stop();
+    gptStopTimer(&AUDIO_STATE_TIMER);
+}
+/* a regular timer task, that checks the note to be currently played
+ * and updates the pwm to output that frequency
+ */
+static void gpt_callback(GPTDriver *gptp) {
+    float freq;  // TODO: freq_alt
+    if (audio_update_state()) {
+        freq = audio_get_processed_frequency(0);  // freq_alt would be index=1
+        channel_1_set_frequency(freq);
+    }
+}
diff --git a/quantum/audio/musical_notes.h b/quantum/audio/musical_notes.h
index 0ba572c34..ddd7d374f 100644
--- a/quantum/audio/musical_notes.h
+++ b/quantum/audio/musical_notes.h
@@ -1,4 +1,5 @@
 /* Copyright 2016 Jack Humbert
+ * Copyright 2020 JohSchneider
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
@@ -13,12 +14,11 @@
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 #pragma once
-// Tempo Placeholder
 #ifndef TEMPO_DEFAULT
-#    define TEMPO_DEFAULT 100
+#    define TEMPO_DEFAULT 120
+// in beats-per-minute
 #endif
 #define SONG(notes...) \
@@ -27,12 +27,14 @@
 // Note Types
 #define MUSICAL_NOTE(note, duration) \
    { (NOTE##note), duration }
 #define BREVE_NOTE(note) MUSICAL_NOTE(note, 128)
 #define WHOLE_NOTE(note) MUSICAL_NOTE(note, 64)
 #define HALF_NOTE(note) MUSICAL_NOTE(note, 32)
 #define QUARTER_NOTE(note) MUSICAL_NOTE(note, 16)
 #define EIGHTH_NOTE(note) MUSICAL_NOTE(note, 8)
 #define SIXTEENTH_NOTE(note) MUSICAL_NOTE(note, 4)
+#define THIRTYSECOND_NOTE(note) MUSICAL_NOTE(note, 2)
 #define BREVE_DOT_NOTE(note) MUSICAL_NOTE(note, 128 + 64)
 #define WHOLE_DOT_NOTE(note) MUSICAL_NOTE(note, 64 + 32)
@@ -40,6 +42,9 @@
 #define QUARTER_DOT_NOTE(note) MUSICAL_NOTE(note, 16 + 8)
 #define EIGHTH_DOT_NOTE(note) MUSICAL_NOTE(note, 8 + 4)
 #define SIXTEENTH_DOT_NOTE(note) MUSICAL_NOTE(note, 4 + 2)
+#define THIRTYSECOND_DOT_NOTE(note) MUSICAL_NOTE(note, 2 + 1)
+// duration of 64 units == one beat == one whole note
+// with a tempo of 60bpm this comes to a length of one second
 // Note Type Shortcuts
 #define M__NOTE(note, duration) MUSICAL_NOTE(note, duration)
@@ -49,56 +54,52 @@
 #define Q__NOTE(n) QUARTER_NOTE(n)
 #define E__NOTE(n) EIGHTH_NOTE(n)
 #define S__NOTE(n) SIXTEENTH_NOTE(n)
+#define T__NOTE(n) THIRTYSECOND_NOTE(n)
 #define BD_NOTE(n) BREVE_DOT_NOTE(n)
 #define WD_NOTE(n) WHOLE_DOT_NOTE(n)
 #define HD_NOTE(n) HALF_DOT_NOTE(n)
 #define QD_NOTE(n) QUARTER_DOT_NOTE(n)
 #define ED_NOTE(n) EIGHTH_DOT_NOTE(n)
 #define SD_NOTE(n) SIXTEENTH_DOT_NOTE(n)
+#define TD_NOTE(n) THIRTYSECOND_DOT_NOTE(n)
 // Note Timbre
 // Changes how the notes sound
-#define TIMBRE_12 0.125f
+#define TIMBRE_12 12
-#define TIMBRE_25 0.250f
+#define TIMBRE_25 25
-#define TIMBRE_50 0.500f
+#define TIMBRE_50 50
-#define TIMBRE_75 0.750f
+#define TIMBRE_75 75
 #ifndef TIMBRE_DEFAULT
 #    define TIMBRE_DEFAULT TIMBRE_50
 #endif
-// Notes - # = Octave
-#ifdef __arm__
+// Notes - # = Octave
-#    define NOTE_REST 1.00f
-#else
-#    define NOTE_REST 0.00f
-#endif
-/* These notes are currently bugged
+#define NOTE_REST 0.00f
-#define NOTE_C0          16.35f
-#define NOTE_CS0         17.32f
-#define NOTE_D0          18.35f
-#define NOTE_DS0         19.45f
-#define NOTE_E0          20.60f
-#define NOTE_F0          21.83f
-#define NOTE_FS0         23.12f
-#define NOTE_G0          24.50f
-#define NOTE_GS0         25.96f
-#define NOTE_A0          27.50f
-#define NOTE_AS0         29.14f
-#define NOTE_B0          30.87f
-#define NOTE_C1          32.70f
-#define NOTE_CS1         34.65f
-#define NOTE_D1          36.71f
-#define NOTE_DS1         38.89f
-#define NOTE_E1          41.20f
-#define NOTE_F1          43.65f
-#define NOTE_FS1         46.25f
-#define NOTE_G1          49.00f
-#define NOTE_GS1         51.91f
-#define NOTE_A1          55.00f
-#define NOTE_AS1         58.27f
-*/
+#define NOTE_C0 16.35f
+#define NOTE_CS0 17.32f
+#define NOTE_D0 18.35f
+#define NOTE_DS0 19.45f
+#define NOTE_E0 20.60f
+#define NOTE_F0 21.83f
+#define NOTE_FS0 23.12f
+#define NOTE_G0 24.50f
+#define NOTE_GS0 25.96f
+#define NOTE_A0 27.50f
+#define NOTE_AS0 29.14f
+#define NOTE_B0 30.87f
+#define NOTE_C1 32.70f
+#define NOTE_CS1 34.65f
+#define NOTE_D1 36.71f
+#define NOTE_DS1 38.89f
+#define NOTE_E1 41.20f
+#define NOTE_F1 43.65f
+#define NOTE_FS1 46.25f
+#define NOTE_G1 49.00f
+#define NOTE_GS1 51.91f
+#define NOTE_A1 55.00f
+#define NOTE_AS1 58.27f
 #define NOTE_B1 61.74f
 #define NOTE_C2 65.41f
 #define NOTE_CS2 69.30f
diff --git a/quantum/audio/voices.c b/quantum/audio/voices.c
index 1592618be..8988d827e 100644
--- a/quantum/audio/voices.c
+++ b/quantum/audio/voices.c
@@ -1,4 +1,5 @@
 /* Copyright 2016 Jack Humbert
+ * Copyright 2020 JohSchneider
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
@@ -17,13 +18,19 @@
 #include "audio.h"
 #include <stdlib.h>
-// these are imported from audio.c
+uint8_t note_timbre      = TIMBRE_DEFAULT;
-extern uint16_t envelope_index;
+bool    glissando        = false;
-extern float    note_timbre;
+bool    vibrato          = false;
-extern float    polyphony_rate;
+float   vibrato_strength = 0.5;
-extern bool     glissando;
+float   vibrato_rate     = 0.125;
+uint16_t voices_timer = 0;
+#ifdef AUDIO_VOICE_DEFAULT
+voice_type voice = AUDIO_VOICE_DEFAULT;
+#else
 voice_type voice = default_voice;
+#endif
 void set_voice(voice_type v) { voice = v; }
@@ -31,22 +38,54 @@ void voice_iterate() { voice = (voice + 1) % number_of_voices; }
 void voice_deiterate() { voice = (voice - 1 + number_of_voices) % number_of_voices; }
+#ifdef AUDIO_VOICES
+float mod(float a, int b) {
+    float r = fmod(a, b);
+    return r < 0 ? r + b : r;
+}
+// Effect: 'vibrate' a given target frequency slightly above/below its initial value
+float voice_add_vibrato(float average_freq) {
+    float vibrato_counter = mod(timer_read() / (100 * vibrato_rate), VIBRATO_LUT_LENGTH);
+    return average_freq * pow(vibrato_lut[(int)vibrato_counter], vibrato_strength);
+}
+// Effect: 'slides' the 'frequency' from the starting-point, to the target frequency
+float voice_add_glissando(float from_freq, float to_freq) {
+    if (to_freq != 0 && from_freq < to_freq && from_freq < to_freq * pow(2, -440 / to_freq / 12 / 2)) {
+        return from_freq * pow(2, 440 / from_freq / 12 / 2);
+    } else if (to_freq != 0 && from_freq > to_freq && from_freq > to_freq * pow(2, 440 / to_freq / 12 / 2)) {
+        return from_freq * pow(2, -440 / from_freq / 12 / 2);
+    } else {
+        return to_freq;
+    }
+}
+#endif
 float voice_envelope(float frequency) {
    // envelope_index ranges from 0 to 0xFFFF, which is preserved at 880.0 Hz
-    __attribute__((unused)) uint16_t compensated_index = (uint16_t)((float)envelope_index * (880.0 / frequency));
+//    __attribute__((unused)) uint16_t compensated_index = (uint16_t)((float)envelope_index * (880.0 / frequency));
+#ifdef AUDIO_VOICES
+    uint16_t envelope_index    = timer_elapsed(voices_timer);  // TODO: multiply in some factor?
+    uint16_t compensated_index = envelope_index / 100;         // TODO: correct factor would be?
+#endif
    switch (voice) {
        case default_voice:
-            glissando      = false;
+            glissando = false;
-            note_timbre    = TIMBRE_50;
+            // note_timbre    = TIMBRE_50; //Note: leave the user the possibility to adjust the timbre with 'audio_set_timbre'
-            polyphony_rate = 0;
            break;
 #ifdef AUDIO_VOICES
+        case vibrating:
+            glissando = false;
+            vibrato   = true;
+            break;
        case something:
-            glissando      = false;
+            glissando = false;
-            polyphony_rate = 0;
            switch (compensated_index) {
                case 0 ... 9:
                    note_timbre = TIMBRE_12;
@@ -57,24 +96,23 @@ float voice_envelope(float frequency) {
                    break;
                case 20 ... 200:
-                    note_timbre = .125 + .125;
+                    note_timbre = 12 + 12;
                    break;
                default:
-                    note_timbre = .125;
+                    note_timbre = 12;
                    break;
            }
            break;
        case drums:
-            glissando      = false;
+            glissando = false;
-            polyphony_rate = 0;
            // switch (compensated_index) {
            //     case 0 ... 10:
-            //         note_timbre = 0.5;
+            //         note_timbre = 50;
            //         break;
            //     case 11 ... 20:
-            //         note_timbre = 0.5 * (21 - compensated_index) / 10;
+            //         note_timbre = 50 * (21 - compensated_index) / 10;
            //         break;
            //     default:
            //         note_timbre = 0;
@@ -88,10 +126,10 @@ float voice_envelope(float frequency) {
                frequency = (rand() % (int)(40)) + 60;
                switch (envelope_index) {
                    case 0 ... 10:
-                        note_timbre = 0.5;
+                        note_timbre = 50;
                        break;
                    case 11 ... 20:
-                        note_timbre = 0.5 * (21 - envelope_index) / 10;
+                        note_timbre = 50 * (21 - envelope_index) / 10;
                        break;
                    default:
                        note_timbre = 0;
@@ -103,10 +141,10 @@ float voice_envelope(float frequency) {
                frequency = (rand() % (int)(1000)) + 1000;
                switch (envelope_index) {
                    case 0 ... 5:
-                        note_timbre = 0.5;
+                        note_timbre = 50;
                        break;
                    case 6 ... 20:
-                        note_timbre = 0.5 * (21 - envelope_index) / 15;
+                        note_timbre = 50 * (21 - envelope_index) / 15;
                        break;
                    default:
                        note_timbre = 0;
@@ -118,10 +156,10 @@ float voice_envelope(float frequency) {
                frequency = (rand() % (int)(2000)) + 3000;
                switch (envelope_index) {
                    case 0 ... 15:
-                        note_timbre = 0.5;
+                        note_timbre = 50;
                        break;
                    case 16 ... 20:
-                        note_timbre = 0.5 * (21 - envelope_index) / 5;
+                        note_timbre = 50 * (21 - envelope_index) / 5;
                        break;
                    default:
                        note_timbre = 0;
@@ -133,10 +171,10 @@ float voice_envelope(float frequency) {
                frequency = (rand() % (int)(2000)) + 3000;
                switch (envelope_index) {
                    case 0 ... 35:
-                        note_timbre = 0.5;
+                        note_timbre = 50;
                        break;
                    case 36 ... 50:
-                        note_timbre = 0.5 * (51 - envelope_index) / 15;
+                        note_timbre = 50 * (51 - envelope_index) / 15;
                        break;
                    default:
                        note_timbre = 0;
@@ -145,8 +183,7 @@ float voice_envelope(float frequency) {
            }
            break;
        case butts_fader:
-            glissando      = true;
+            glissando = true;
-            polyphony_rate = 0;
            switch (compensated_index) {
                case 0 ... 9:
                    frequency   = frequency / 4;
@@ -159,7 +196,7 @@ float voice_envelope(float frequency) {
                    break;
                case 20 ... 200:
-                    note_timbre = .125 - pow(((float)compensated_index - 20) / (200 - 20), 2) * .125;
+                    note_timbre = 12 - (uint8_t)(pow(((float)compensated_index - 20) / (200 - 20), 2) * 12.5);
                    break;
                default:
@@ -169,7 +206,6 @@ float voice_envelope(float frequency) {
            break;
            // case octave_crunch:
-            //     polyphony_rate = 0;
            //     switch (compensated_index) {
            //         case 0 ... 9:
            //         case 20 ... 24:
@@ -187,14 +223,13 @@ float voice_envelope(float frequency) {
            //         default:
            //             note_timbre = TIMBRE_12;
-            //          break;
+            //          break;
            //     }
            //  break;
        case duty_osc:
            // This slows the loop down a substantial amount, so higher notes may freeze
-            glissando      = true;
+            glissando = true;
-            polyphony_rate = 0;
            switch (compensated_index) {
                default:
 #    define OCS_SPEED 10
@@ -202,38 +237,36 @@ float voice_envelope(float frequency) {
                    // sine wave is slow
                    // note_timbre = (sin((float)compensated_index/10000*OCS_SPEED) * OCS_AMP / 2) + .5;
                    // triangle wave is a bit faster
-                    note_timbre = (float)abs((compensated_index * OCS_SPEED % 3000) - 1500) * (OCS_AMP / 1500) + (1 - OCS_AMP) / 2;
+                    note_timbre = (uint8_t)abs((compensated_index * OCS_SPEED % 3000) - 1500) * (OCS_AMP / 1500) + (1 - OCS_AMP) / 2;
                    break;
            }
            break;
        case duty_octave_down:
-            glissando      = true;
+            glissando   = true;
-            polyphony_rate = 0;
+            note_timbre = (uint8_t)(100 * (envelope_index % 2) * .125 + .375 * 2);
-            note_timbre    = (envelope_index % 2) * .125 + .375 * 2;
+            if ((envelope_index % 4) == 0) note_timbre = 50;
-            if ((envelope_index % 4) == 0) note_timbre = 0.5;
            if ((envelope_index % 8) == 0) note_timbre = 0;
            break;
        case delayed_vibrato:
-            glissando      = true;
+            glissando   = true;
-            polyphony_rate = 0;
+            note_timbre = TIMBRE_50;
-            note_timbre    = TIMBRE_50;
 #    define VOICE_VIBRATO_DELAY 150
 #    define VOICE_VIBRATO_SPEED 50
            switch (compensated_index) {
                case 0 ... VOICE_VIBRATO_DELAY:
                    break;
                default:
+                    // TODO: merge/replace with voice_add_vibrato above
                    frequency = frequency * vibrato_lut[(int)fmod((((float)compensated_index - (VOICE_VIBRATO_DELAY + 1)) / 1000 * VOICE_VIBRATO_SPEED), VIBRATO_LUT_LENGTH)];
                    break;
            }
            break;
            // case delayed_vibrato_octave:
-            //     polyphony_rate = 0;
            //     if ((envelope_index % 2) == 1) {
-            //         note_timbre = 0.55;
+            //         note_timbre = 55;
            //     } else {
-            //         note_timbre = 0.45;
+            //         note_timbre = 45;
            //     }
            //     #define VOICE_VIBRATO_DELAY 150
            //     #define VOICE_VIBRATO_SPEED 50
@@ -246,35 +279,64 @@ float voice_envelope(float frequency) {
            //     }
            //     break;
            // case duty_fifth_down:
-            //     note_timbre = 0.5;
+            //     note_timbre = TIMBRE_50;
            //     if ((envelope_index % 3) == 0)
-            //         note_timbre = 0.75;
+            //         note_timbre = TIMBRE_75;
            //     break;
            // case duty_fourth_down:
-            //     note_timbre = 0.0;
+            //     note_timbre = 0;
            //     if ((envelope_index % 12) == 0)
-            //         note_timbre = 0.75;
+            //         note_timbre = TIMBRE_75;
            //     if (((envelope_index % 12) % 4) != 1)
-            //         note_timbre = 0.75;
+            //         note_timbre = TIMBRE_75;
            //     break;
            // case duty_third_down:
-            //     note_timbre = 0.5;
+            //     note_timbre = TIMBRE_50;
            //     if ((envelope_index % 5) == 0)
-            //         note_timbre = 0.75;
+            //         note_timbre = TIMBRE_75;
            //     break;
            // case duty_fifth_third_down:
-            //     note_timbre = 0.5;
+            //     note_timbre = TIMBRE_50;
            //     if ((envelope_index % 5) == 0)
-            //         note_timbre = 0.75;
+            //         note_timbre = TIMBRE_75;
            //     if ((envelope_index % 3) == 0)
-            //         note_timbre = 0.25;
+            //         note_timbre = TIMBRE_25;
            //     break;
-#endif
+#endif  // AUDIO_VOICES
        default:
            break;
    }
+#ifdef AUDIO_VOICES
+    if (vibrato && (vibrato_strength > 0)) {
+        frequency = voice_add_vibrato(frequency);
+    }
+    if (glissando) {
+        // TODO: where to keep track of the start-frequency?
+        // frequency = voice_add_glissando(??, frequency);
+    }
+#endif  // AUDIO_VOICES
    return frequency;
 }
+// Vibrato functions
+void voice_set_vibrato_rate(float rate) { vibrato_rate = rate; }
+void voice_increase_vibrato_rate(float change) { vibrato_rate *= change; }
+void voice_decrease_vibrato_rate(float change) { vibrato_rate /= change; }
+void voice_set_vibrato_strength(float strength) { vibrato_strength = strength; }
+void voice_increase_vibrato_strength(float change) { vibrato_strength *= change; }
+void voice_decrease_vibrato_strength(float change) { vibrato_strength /= change; }
+// Timbre functions
+void voice_set_timbre(uint8_t timbre) {
+    if ((timbre > 0) && (timbre < 100)) {
+        note_timbre = timbre;
+    }
+}
+uint8_t voice_get_timbre(void) { return note_timbre; }
diff --git a/quantum/audio/voices.h b/quantum/audio/voices.h
index abafa2b40..578350d33 100644
--- a/quantum/audio/voices.h
+++ b/quantum/audio/voices.h
@@ -1,4 +1,5 @@
 /* Copyright 2016 Jack Humbert
+ * Copyright 2020 JohSchneider
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
@@ -13,7 +14,6 @@
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
 #pragma once
 #include <stdint.h>
@@ -29,6 +29,7 @@ float voice_envelope(float frequency);
 typedef enum {
    default_voice,
 #ifdef AUDIO_VOICES
+    vibrating,
    something,
    drums,
    butts_fader,
@@ -48,3 +49,21 @@ typedef enum {
 void set_voice(voice_type v);
 void voice_iterate(void);
 void voice_deiterate(void);
+// Vibrato functions
+void voice_set_vibrato_rate(float rate);
+void voice_increase_vibrato_rate(float change);
+void voice_decrease_vibrato_rate(float change);
+void voice_set_vibrato_strength(float strength);
+void voice_increase_vibrato_strength(float change);
+void voice_decrease_vibrato_strength(float change);
+// Timbre functions
+/**
+ * @brief set the global timbre for tones to be played
+ * @note: only applies to pwm implementations - where it adjusts the duty-cycle
+ * @note: using any instrument from voices.[ch] other than 'default' may override the set value
+ * @param[in]: timbre: valid range is (0,100)
+ */
+void    voice_set_timbre(uint8_t timbre);
+uint8_t voice_get_timbre(void);
diff --git a/quantum/audio/wave.h b/quantum/audio/wave.h
deleted file mode 100644
index 48210a944..000000000
--- a/quantum/audio/wave.h
+++ /dev/null
@@ -1,36 +0,0 @@
-/* Copyright 2016 Jack Humbert
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-#include <avr/io.h>
-#include <avr/interrupt.h>
-#include <avr/pgmspace.h>
-#define SINE_LENGTH 2048
-const uint8_t sinewave[] PROGMEM =  // 2048 values
-    {0x80, 0x80, 0x80, 0x81, 0x81, 0x81, 0x82, 0x82, 0x83, 0x83, 0x83, 0x84, 0x84, 0x85, 0x85, 0x85, 0x86, 0x86, 0x87, 0x87, 0x87, 0x88, 0x88, 0x88, 0x89, 0x89, 0x8a, 0x8a, 0x8a, 0x8b, 0x8b, 0x8c, 0x8c, 0x8c, 0x8d, 0x8d, 0x8e, 0x8e, 0x8e, 0x8f, 0x8f, 0x8f, 0x90, 0x90, 0x91, 0x91, 0x91, 0x92, 0x92, 0x93, 0x93, 0x93, 0x94, 0x94, 0x95, 0x95, 0x95, 0x96, 0x96, 0x96, 0x97, 0x97, 0x98, 0x98, 0x98, 0x99, 0x99, 0x9a, 0x9a, 0x9a, 0x9b, 0x9b, 0x9b, 0x9c, 0x9c, 0x9d, 0x9d, 0x9d, 0x9e, 0x9e, 0x9e, 0x9f, 0x9f, 0xa0, 0xa0, 0xa0, 0xa1, 0xa1, 0xa2, 0xa2, 0xa2, 0xa3, 0xa3, 0xa3, 0xa4, 0xa4, 0xa5, 0xa5, 0xa5, 0xa6, 0xa6, 0xa6, 0xa7, 0xa7, 0xa7, 0xa8, 0xa8, 0xa9, 0xa9, 0xa9, 0xaa, 0xaa, 0xaa, 0xab, 0xab, 0xac, 0xac, 0xac, 0xad, 0xad, 0xad, 0xae, 0xae, 0xae, 0xaf, 0xaf, 0xb0, 0xb0, 0xb0, 0xb1, 0xb1, 0xb1, 0xb2, 0xb2, 0xb2, 0xb3, 0xb3, 0xb4, 0xb4, 0xb4, 0xb5, 0xb5, 0xb5, 0xb6, 0xb6, 0xb6, 0xb7, 0xb7, 0xb7, 0xb8, 0xb8, 0xb8, 0xb9, 0xb9, 0xba, 0xba, 0xba, 0xbb,
-     0xbb, 0xbb, 0xbc, 0xbc, 0xbc, 0xbd, 0xbd, 0xbd, 0xbe, 0xbe, 0xbe, 0xbf, 0xbf, 0xbf, 0xc0, 0xc0, 0xc0, 0xc1, 0xc1, 0xc1, 0xc2, 0xc2, 0xc2, 0xc3, 0xc3, 0xc3, 0xc4, 0xc4, 0xc4, 0xc5, 0xc5, 0xc5, 0xc6, 0xc6, 0xc6, 0xc7, 0xc7, 0xc7, 0xc8, 0xc8, 0xc8, 0xc9, 0xc9, 0xc9, 0xca, 0xca, 0xca, 0xcb, 0xcb, 0xcb, 0xcb, 0xcc, 0xcc, 0xcc, 0xcd, 0xcd, 0xcd, 0xce, 0xce, 0xce, 0xcf, 0xcf, 0xcf, 0xcf, 0xd0, 0xd0, 0xd0, 0xd1, 0xd1, 0xd1, 0xd2, 0xd2, 0xd2, 0xd2, 0xd3, 0xd3, 0xd3, 0xd4, 0xd4, 0xd4, 0xd5, 0xd5, 0xd5, 0xd5, 0xd6, 0xd6, 0xd6, 0xd7, 0xd7, 0xd7, 0xd7, 0xd8, 0xd8, 0xd8, 0xd9, 0xd9, 0xd9, 0xd9, 0xda, 0xda, 0xda, 0xda, 0xdb, 0xdb, 0xdb, 0xdc, 0xdc, 0xdc, 0xdc, 0xdd, 0xdd, 0xdd, 0xdd, 0xde, 0xde, 0xde, 0xde, 0xdf, 0xdf, 0xdf, 0xe0, 0xe0, 0xe0, 0xe0, 0xe1, 0xe1, 0xe1, 0xe1, 0xe2, 0xe2, 0xe2, 0xe2, 0xe3, 0xe3, 0xe3, 0xe3, 0xe4, 0xe4, 0xe4, 0xe4, 0xe4, 0xe5, 0xe5, 0xe5, 0xe5, 0xe6, 0xe6, 0xe6, 0xe6, 0xe7, 0xe7, 0xe7, 0xe7, 0xe8, 0xe8, 0xe8, 0xe8, 0xe8,
-     0xe9, 0xe9, 0xe9, 0xe9, 0xea, 0xea, 0xea, 0xea, 0xea, 0xeb, 0xeb, 0xeb, 0xeb, 0xeb, 0xec, 0xec, 0xec, 0xec, 0xec, 0xed, 0xed, 0xed, 0xed, 0xed, 0xee, 0xee, 0xee, 0xee, 0xee, 0xef, 0xef, 0xef, 0xef, 0xef, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf1, 0xf1, 0xf1, 0xf1, 0xf1, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf3, 0xf3, 0xf3, 0xf3, 0xf3, 0xf3, 0xf4, 0xf4, 0xf4, 0xf4, 0xf4, 0xf4, 0xf5, 0xf5, 0xf5, 0xf5, 0xf5, 0xf5, 0xf5, 0xf6, 0xf6, 0xf6, 0xf6, 0xf6, 0xf6, 0xf6, 0xf7, 0xf7, 0xf7, 0xf7, 0xf7, 0xf7, 0xf7, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf9, 0xf9, 0xf9, 0xf9, 0xf9, 0xf9, 0xf9, 0xf9, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfb, 0xfb, 0xfb, 0xfb, 0xfb, 0xfb, 0xfb, 0xfb, 0xfb, 0xfb, 0xfc, 0xfc, 0xfc, 0xfc, 0xfc, 0xfc, 0xfc, 0xfc, 0xfc, 0xfc, 0xfc, 0xfc, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe,
-     0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfd, 0xfc, 0xfc, 0xfc, 0xfc, 0xfc, 0xfc, 0xfc, 0xfc, 0xfc, 0xfc, 0xfc, 0xfc, 0xfb, 0xfb, 0xfb, 0xfb, 0xfb, 0xfb, 0xfb, 0xfb, 0xfb, 0xfb, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xfa, 0xf9, 0xf9, 0xf9, 0xf9, 0xf9, 0xf9, 0xf9, 0xf9, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf8, 0xf7, 0xf7, 0xf7, 0xf7, 0xf7, 0xf7, 0xf7,
-     0xf6, 0xf6, 0xf6, 0xf6, 0xf6, 0xf6, 0xf6, 0xf5, 0xf5, 0xf5, 0xf5, 0xf5, 0xf5, 0xf5, 0xf4, 0xf4, 0xf4, 0xf4, 0xf4, 0xf4, 0xf3, 0xf3, 0xf3, 0xf3, 0xf3, 0xf3, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf2, 0xf1, 0xf1, 0xf1, 0xf1, 0xf1, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xf0, 0xef, 0xef, 0xef, 0xef, 0xef, 0xee, 0xee, 0xee, 0xee, 0xee, 0xed, 0xed, 0xed, 0xed, 0xed, 0xec, 0xec, 0xec, 0xec, 0xec, 0xeb, 0xeb, 0xeb, 0xeb, 0xeb, 0xea, 0xea, 0xea, 0xea, 0xea, 0xe9, 0xe9, 0xe9, 0xe9, 0xe8, 0xe8, 0xe8, 0xe8, 0xe8, 0xe7, 0xe7, 0xe7, 0xe7, 0xe6, 0xe6, 0xe6, 0xe6, 0xe5, 0xe5, 0xe5, 0xe5, 0xe4, 0xe4, 0xe4, 0xe4, 0xe4, 0xe3, 0xe3, 0xe3, 0xe3, 0xe2, 0xe2, 0xe2, 0xe2, 0xe1, 0xe1, 0xe1, 0xe1, 0xe0, 0xe0, 0xe0, 0xe0, 0xdf, 0xdf, 0xdf, 0xde, 0xde, 0xde, 0xde, 0xdd, 0xdd, 0xdd, 0xdd, 0xdc, 0xdc, 0xdc, 0xdc, 0xdb, 0xdb, 0xdb, 0xda, 0xda, 0xda, 0xda, 0xd9, 0xd9, 0xd9, 0xd9, 0xd8, 0xd8, 0xd8, 0xd7, 0xd7, 0xd7, 0xd7, 0xd6, 0xd6, 0xd6, 0xd5, 0xd5, 0xd5, 0xd5, 0xd4, 0xd4, 0xd4,
-     0xd3, 0xd3, 0xd3, 0xd2, 0xd2, 0xd2, 0xd2, 0xd1, 0xd1, 0xd1, 0xd0, 0xd0, 0xd0, 0xcf, 0xcf, 0xcf, 0xcf, 0xce, 0xce, 0xce, 0xcd, 0xcd, 0xcd, 0xcc, 0xcc, 0xcc, 0xcb, 0xcb, 0xcb, 0xcb, 0xca, 0xca, 0xca, 0xc9, 0xc9, 0xc9, 0xc8, 0xc8, 0xc8, 0xc7, 0xc7, 0xc7, 0xc6, 0xc6, 0xc6, 0xc5, 0xc5, 0xc5, 0xc4, 0xc4, 0xc4, 0xc3, 0xc3, 0xc3, 0xc2, 0xc2, 0xc2, 0xc1, 0xc1, 0xc1, 0xc0, 0xc0, 0xc0, 0xbf, 0xbf, 0xbf, 0xbe, 0xbe, 0xbe, 0xbd, 0xbd, 0xbd, 0xbc, 0xbc, 0xbc, 0xbb, 0xbb, 0xbb, 0xba, 0xba, 0xba, 0xb9, 0xb9, 0xb8, 0xb8, 0xb8, 0xb7, 0xb7, 0xb7, 0xb6, 0xb6, 0xb6, 0xb5, 0xb5, 0xb5, 0xb4, 0xb4, 0xb4, 0xb3, 0xb3, 0xb2, 0xb2, 0xb2, 0xb1, 0xb1, 0xb1, 0xb0, 0xb0, 0xb0, 0xaf, 0xaf, 0xae, 0xae, 0xae, 0xad, 0xad, 0xad, 0xac, 0xac, 0xac, 0xab, 0xab, 0xaa, 0xaa, 0xaa, 0xa9, 0xa9, 0xa9, 0xa8, 0xa8, 0xa7, 0xa7, 0xa7, 0xa6, 0xa6, 0xa6, 0xa5, 0xa5, 0xa5, 0xa4, 0xa4, 0xa3, 0xa3, 0xa3, 0xa2, 0xa2, 0xa2, 0xa1, 0xa1, 0xa0, 0xa0, 0xa0, 0x9f, 0x9f, 0x9e, 0x9e, 0x9e, 0x9d,
-     0x9d, 0x9d, 0x9c, 0x9c, 0x9b, 0x9b, 0x9b, 0x9a, 0x9a, 0x9a, 0x99, 0x99, 0x98, 0x98, 0x98, 0x97, 0x97, 0x96, 0x96, 0x96, 0x95, 0x95, 0x95, 0x94, 0x94, 0x93, 0x93, 0x93, 0x92, 0x92, 0x91, 0x91, 0x91, 0x90, 0x90, 0x8f, 0x8f, 0x8f, 0x8e, 0x8e, 0x8e, 0x8d, 0x8d, 0x8c, 0x8c, 0x8c, 0x8b, 0x8b, 0x8a, 0x8a, 0x8a, 0x89, 0x89, 0x88, 0x88, 0x88, 0x87, 0x87, 0x87, 0x86, 0x86, 0x85, 0x85, 0x85, 0x84, 0x84, 0x83, 0x83, 0x83, 0x82, 0x82, 0x81, 0x81, 0x81, 0x80, 0x80, 0x80, 0x7f, 0x7f, 0x7e, 0x7e, 0x7e, 0x7d, 0x7d, 0x7c, 0x7c, 0x7c, 0x7b, 0x7b, 0x7a, 0x7a, 0x7a, 0x79, 0x79, 0x78, 0x78, 0x78, 0x77, 0x77, 0x77, 0x76, 0x76, 0x75, 0x75, 0x75, 0x74, 0x74, 0x73, 0x73, 0x73, 0x72, 0x72, 0x71, 0x71, 0x71, 0x70, 0x70, 0x70, 0x6f, 0x6f, 0x6e, 0x6e, 0x6e, 0x6d, 0x6d, 0x6c, 0x6c, 0x6c, 0x6b, 0x6b, 0x6a, 0x6a, 0x6a, 0x69, 0x69, 0x69, 0x68, 0x68, 0x67, 0x67, 0x67, 0x66, 0x66, 0x65, 0x65, 0x65, 0x64, 0x64, 0x64, 0x63, 0x63, 0x62, 0x62, 0x62, 0x61, 0x61, 0x61, 0x60,
-     0x60, 0x5f, 0x5f, 0x5f, 0x5e, 0x5e, 0x5d, 0x5d, 0x5d, 0x5c, 0x5c, 0x5c, 0x5b, 0x5b, 0x5a, 0x5a, 0x5a, 0x59, 0x59, 0x59, 0x58, 0x58, 0x58, 0x57, 0x57, 0x56, 0x56, 0x56, 0x55, 0x55, 0x55, 0x54, 0x54, 0x53, 0x53, 0x53, 0x52, 0x52, 0x52, 0x51, 0x51, 0x51, 0x50, 0x50, 0x4f, 0x4f, 0x4f, 0x4e, 0x4e, 0x4e, 0x4d, 0x4d, 0x4d, 0x4c, 0x4c, 0x4b, 0x4b, 0x4b, 0x4a, 0x4a, 0x4a, 0x49, 0x49, 0x49, 0x48, 0x48, 0x48, 0x47, 0x47, 0x47, 0x46, 0x46, 0x45, 0x45, 0x45, 0x44, 0x44, 0x44, 0x43, 0x43, 0x43, 0x42, 0x42, 0x42, 0x41, 0x41, 0x41, 0x40, 0x40, 0x40, 0x3f, 0x3f, 0x3f, 0x3e, 0x3e, 0x3e, 0x3d, 0x3d, 0x3d, 0x3c, 0x3c, 0x3c, 0x3b, 0x3b, 0x3b, 0x3a, 0x3a, 0x3a, 0x39, 0x39, 0x39, 0x38, 0x38, 0x38, 0x37, 0x37, 0x37, 0x36, 0x36, 0x36, 0x35, 0x35, 0x35, 0x34, 0x34, 0x34, 0x34, 0x33, 0x33, 0x33, 0x32, 0x32, 0x32, 0x31, 0x31, 0x31, 0x30, 0x30, 0x30, 0x30, 0x2f, 0x2f, 0x2f, 0x2e, 0x2e, 0x2e, 0x2d, 0x2d, 0x2d, 0x2d, 0x2c, 0x2c, 0x2c, 0x2b, 0x2b, 0x2b, 0x2a, 0x2a,
-     0x2a, 0x2a, 0x29, 0x29, 0x29, 0x28, 0x28, 0x28, 0x28, 0x27, 0x27, 0x27, 0x26, 0x26, 0x26, 0x26, 0x25, 0x25, 0x25, 0x25, 0x24, 0x24, 0x24, 0x23, 0x23, 0x23, 0x23, 0x22, 0x22, 0x22, 0x22, 0x21, 0x21, 0x21, 0x21, 0x20, 0x20, 0x20, 0x1f, 0x1f, 0x1f, 0x1f, 0x1e, 0x1e, 0x1e, 0x1e, 0x1d, 0x1d, 0x1d, 0x1d, 0x1c, 0x1c, 0x1c, 0x1c, 0x1b, 0x1b, 0x1b, 0x1b, 0x1b, 0x1a, 0x1a, 0x1a, 0x1a, 0x19, 0x19, 0x19, 0x19, 0x18, 0x18, 0x18, 0x18, 0x17, 0x17, 0x17, 0x17, 0x17, 0x16, 0x16, 0x16, 0x16, 0x15, 0x15, 0x15, 0x15, 0x15, 0x14, 0x14, 0x14, 0x14, 0x14, 0x13, 0x13, 0x13, 0x13, 0x13, 0x12, 0x12, 0x12, 0x12, 0x12, 0x11, 0x11, 0x11, 0x11, 0x11, 0x10, 0x10, 0x10, 0x10, 0x10, 0xf,  0xf,  0xf,  0xf,  0xf,  0xf,  0xe,  0xe,  0xe,  0xe,  0xe,  0xd,  0xd,  0xd,  0xd,  0xd,  0xd,  0xc,  0xc,  0xc,  0xc,  0xc,  0xc,  0xb,  0xb,  0xb,  0xb,  0xb,  0xb,  0xa,  0xa,  0xa,  0xa,  0xa,  0xa,  0xa,  0x9,  0x9,  0x9,  0x9,  0x9,  0x9,  0x9,  0x8,  0x8,  0x8,  0x8,  0x8,
-     0x8,  0x8,  0x7,  0x7,  0x7,  0x7,  0x7,  0x7,  0x7,  0x7,  0x6,  0x6,  0x6,  0x6,  0x6,  0x6,  0x6,  0x6,  0x5,  0x5,  0x5,  0x5,  0x5,  0x5,  0x5,  0x5,  0x5,  0x5,  0x4,  0x4,  0x4,  0x4,  0x4,  0x4,  0x4,  0x4,  0x4,  0x4,  0x3,  0x3,  0x3,  0x3,  0x3,  0x3,  0x3,  0x3,  0x3,  0x3,  0x3,  0x3,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x0,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,
-     0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x1,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x2,  0x3,  0x3,  0x3,  0x3,  0x3,  0x3,  0x3,  0x3,  0x3,  0x3,  0x3,  0x3,  0x4,  0x4,  0x4,  0x4,  0x4,  0x4,  0x4,  0x4,  0x4,  0x4,  0x5,  0x5,  0x5,  0x5,  0x5,  0x5,  0x5,  0x5,  0x5,  0x5,  0x6,  0x6,  0x6,  0x6,  0x6,  0x6,  0x6,  0x6,  0x7,  0x7,  0x7,  0x7,  0x7,  0x7,  0x7,  0x7,  0x8,  0x8,  0x8,  0x8,  0x8,  0x8,  0x8,  0x9,  0x9,  0x9,  0x9,  0x9,  0x9,  0x9,  0xa,  0xa,  0xa,  0xa,  0xa,  0xa,  0xa,  0xb,  0xb,  0xb,  0xb,  0xb,  0xb,  0xc,  0xc,  0xc,  0xc,  0xc,  0xc,  0xd,  0xd,  0xd,  0xd,  0xd,  0xd,  0xe,  0xe,  0xe,  0xe,  0xe,  0xf,  0xf,  0xf,  0xf,  0xf,  0xf,  0x10, 0x10, 0x10, 0x10, 0x10, 0x11, 0x11, 0x11, 0x11, 0x11, 0x12, 0x12, 0x12, 0x12, 0x12, 0x13, 0x13, 0x13, 0x13, 0x13, 0x14, 0x14, 0x14, 0x14, 0x14, 0x15, 0x15, 0x15, 0x15, 0x15, 0x16, 0x16, 0x16, 0x16, 0x17, 0x17, 0x17, 0x17, 0x17,
-     0x18, 0x18, 0x18, 0x18, 0x19, 0x19, 0x19, 0x19, 0x1a, 0x1a, 0x1a, 0x1a, 0x1b, 0x1b, 0x1b, 0x1b, 0x1b, 0x1c, 0x1c, 0x1c, 0x1c, 0x1d, 0x1d, 0x1d, 0x1d, 0x1e, 0x1e, 0x1e, 0x1e, 0x1f, 0x1f, 0x1f, 0x1f, 0x20, 0x20, 0x20, 0x21, 0x21, 0x21, 0x21, 0x22, 0x22, 0x22, 0x22, 0x23, 0x23, 0x23, 0x23, 0x24, 0x24, 0x24, 0x25, 0x25, 0x25, 0x25, 0x26, 0x26, 0x26, 0x26, 0x27, 0x27, 0x27, 0x28, 0x28, 0x28, 0x28, 0x29, 0x29, 0x29, 0x2a, 0x2a, 0x2a, 0x2a, 0x2b, 0x2b, 0x2b, 0x2c, 0x2c, 0x2c, 0x2d, 0x2d, 0x2d, 0x2d, 0x2e, 0x2e, 0x2e, 0x2f, 0x2f, 0x2f, 0x30, 0x30, 0x30, 0x30, 0x31, 0x31, 0x31, 0x32, 0x32, 0x32, 0x33, 0x33, 0x33, 0x34, 0x34, 0x34, 0x34, 0x35, 0x35, 0x35, 0x36, 0x36, 0x36, 0x37, 0x37, 0x37, 0x38, 0x38, 0x38, 0x39, 0x39, 0x39, 0x3a, 0x3a, 0x3a, 0x3b, 0x3b, 0x3b, 0x3c, 0x3c, 0x3c, 0x3d, 0x3d, 0x3d, 0x3e, 0x3e, 0x3e, 0x3f, 0x3f, 0x3f, 0x40, 0x40, 0x40, 0x41, 0x41, 0x41, 0x42, 0x42, 0x42, 0x43, 0x43, 0x43, 0x44, 0x44, 0x44, 0x45, 0x45, 0x45, 0x46,
-     0x46, 0x47, 0x47, 0x47, 0x48, 0x48, 0x48, 0x49, 0x49, 0x49, 0x4a, 0x4a, 0x4a, 0x4b, 0x4b, 0x4b, 0x4c, 0x4c, 0x4d, 0x4d, 0x4d, 0x4e, 0x4e, 0x4e, 0x4f, 0x4f, 0x4f, 0x50, 0x50, 0x51, 0x51, 0x51, 0x52, 0x52, 0x52, 0x53, 0x53, 0x53, 0x54, 0x54, 0x55, 0x55, 0x55, 0x56, 0x56, 0x56, 0x57, 0x57, 0x58, 0x58, 0x58, 0x59, 0x59, 0x59, 0x5a, 0x5a, 0x5a, 0x5b, 0x5b, 0x5c, 0x5c, 0x5c, 0x5d, 0x5d, 0x5d, 0x5e, 0x5e, 0x5f, 0x5f, 0x5f, 0x60, 0x60, 0x61, 0x61, 0x61, 0x62, 0x62, 0x62, 0x63, 0x63, 0x64, 0x64, 0x64, 0x65, 0x65, 0x65, 0x66, 0x66, 0x67, 0x67, 0x67, 0x68, 0x68, 0x69, 0x69, 0x69, 0x6a, 0x6a, 0x6a, 0x6b, 0x6b, 0x6c, 0x6c, 0x6c, 0x6d, 0x6d, 0x6e, 0x6e, 0x6e, 0x6f, 0x6f, 0x70, 0x70, 0x70, 0x71, 0x71, 0x71, 0x72, 0x72, 0x73, 0x73, 0x73, 0x74, 0x74, 0x75, 0x75, 0x75, 0x76, 0x76, 0x77, 0x77, 0x77, 0x78, 0x78, 0x78, 0x79, 0x79, 0x7a, 0x7a, 0x7a, 0x7b, 0x7b, 0x7c, 0x7c, 0x7c, 0x7d, 0x7d, 0x7e, 0x7e, 0x7e, 0x7f, 0x7f};
diff --git a/quantum/backlight/backlight_avr.c b/quantum/backlight/backlight_avr.c
index 2ecdd4f2c..e47192de3 100644
--- a/quantum/backlight/backlight_avr.c
+++ b/quantum/backlight/backlight_avr.c
@@ -126,7 +126,7 @@
 #        define COMxx1 COM1B1
 #        define OCRxx OCR1B
 #    endif
-#elif !defined(B5_AUDIO) && !defined(B6_AUDIO) && !defined(B7_AUDIO)
+#elif (AUDIO_PIN != B5) && (AUDIO_PIN != B6) && (AUDIO_PIN != B7) && (AUDIO_PIN_ALT != B5) && (AUDIO_PIN_ALT != B6) && (AUDIO_PIN_ALT != B7)
 // Timer 1 is not in use by Audio feature, Backlight can use it
 #    pragma message "Using hardware timer 1 with software PWM"
 #    define HARDWARE_PWM
@@ -145,7 +145,7 @@
 #    define OCIExA OCIE1A
 #    define OCRxx OCR1A
-#elif !defined(C6_AUDIO) && !defined(C5_AUDIO) && !defined(C4_AUDIO)
+#elif (AUDIO_PIN != C4) && (AUDIO_PIN != C5) && (AUDIO_PIN != C6)
 #    pragma message "Using hardware timer 3 with software PWM"
 // Timer 3 is not in use by Audio feature, Backlight can use it
 #    define HARDWARE_PWM
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 1db3b6d73..caae27741 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -6,3 +6,4 @@ nose2
 flake8
 pep8-naming
 yapf
+wave
diff --git a/users/yanfali/config.h b/users/yanfali/config.h
index 26517a9f6..a39e95c9d 100644
--- a/users/yanfali/config.h
+++ b/users/yanfali/config.h
@@ -2,7 +2,7 @@
 #ifdef KEYBOARD_evyd13_plain60
-#define B7_AUDIO
+#define AUDIO_PIN B7
 #ifdef AUDIO_ENABLE
  #define STARTUP_SONG SONG(GUITAR_SOUND)
 #endif
diff --git a/util/audio_generate_dac_lut.py b/util/audio_generate_dac_lut.py
new file mode 100755
index 000000000..c31ba3d7e
--- /dev/null
+++ b/util/audio_generate_dac_lut.py
@@ -0,0 +1,67 @@
+#!/usr/bin/env python3
+#
+# Copyright 2020 JohSchneider
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+AUDIO_DAC_BUFFER_SIZE=256
+AUDIO_DAC_SAMPLE_MAX=4095
+def plot(values):
+    for v in values:
+        print('0'* int(v * 80/AUDIO_DAC_SAMPLE_MAX))
+def to_lut(values):
+    for v in values:
+        print(hex(int(v)), end=", ")
+from math import sin, tau, pi
+samples=[]
+def sampleSine():
+    for s in range(AUDIO_DAC_BUFFER_SIZE):
+        samples.append((sin((s/AUDIO_DAC_BUFFER_SIZE)*tau - pi/2) + 1 )/2* AUDIO_DAC_SAMPLE_MAX)
+def sampleTriangle():
+    for s in range(AUDIO_DAC_BUFFER_SIZE):
+        if s < AUDIO_DAC_BUFFER_SIZE/2:
+            samples.append(s/(AUDIO_DAC_BUFFER_SIZE/2) * AUDIO_DAC_SAMPLE_MAX)
+        else:
+            samples.append(AUDIO_DAC_SAMPLE_MAX - (s-AUDIO_DAC_BUFFER_SIZE/2)/(AUDIO_DAC_BUFFER_SIZE/2) * AUDIO_DAC_SAMPLE_MAX)
+#compromise between square and triangle wave,
+def sampleTrapezoidal():
+    for i in range(AUDIO_DAC_BUFFER_SIZE):
+        a=3 #slope/inclination
+        if (i < AUDIO_DAC_BUFFER_SIZE/2):
+            s = a * (i * AUDIO_DAC_SAMPLE_MAX/(AUDIO_DAC_BUFFER_SIZE/2)) + (1-a)*AUDIO_DAC_SAMPLE_MAX/2
+        else:
+            i = i - AUDIO_DAC_BUFFER_SIZE/2
+            s = AUDIO_DAC_SAMPLE_MAX - a * (i * AUDIO_DAC_SAMPLE_MAX/(AUDIO_DAC_BUFFER_SIZE/2)) - (1-a)*AUDIO_DAC_SAMPLE_MAX/2
+        if s < 0:
+            s=0
+        if s> AUDIO_DAC_SAMPLE_MAX:
+            s=AUDIO_DAC_SAMPLE_MAX
+        samples.append(s)
+#sampleSine()
+sampleTrapezoidal()
+#print(samples)
+plot(samples)
+to_lut(samples)
diff --git a/util/sample_parser.py b/util/sample_parser.py
new file mode 100755
index 000000000..70e193aee
--- /dev/null
+++ b/util/sample_parser.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+#
+# Copyright 2019 Jack Humbert
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+import wave, struct, sys
+waveFile = wave.open(sys.argv[1], 'r')
+# print(str(waveFile.getparams()))
+# sys.exit()
+if (waveFile.getsampwidth() != 2):
+    raise(Exception("This script currently only works with 16bit audio files"))
+length = waveFile.getnframes()
+out = "#define DAC_SAMPLE_CUSTOM_LENGTH " + str(length) + "\n\n"
+out += "static const dacsample_t dac_sample_custom[" + str(length) + "] = {"
+for i in range(0,length):
+    if (i % 8 == 0):
+        out += "\n    "
+    waveData = waveFile.readframes(1)
+    data = struct.unpack("<h", waveData)
+    out += str(int((int(data[0]) + 0x8000) / 16)) + ", "
+out = out[:-2]
+out += "\n};"
+print(out)
diff --git a/util/wavetable_parser.py b/util/wavetable_parser.py
new file mode 100755
index 000000000..be0f01f7b
--- /dev/null
+++ b/util/wavetable_parser.py
@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+#
+# Copyright 2019 Jack Humbert
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+import wave, struct, sys
+waveFile = wave.open(sys.argv[1], 'r')
+length = waveFile.getnframes()
+out = "#define DAC_WAVETABLE_CUSTOM_LENGTH " + str(int(length / 256)) + "\n\n"
+out += "static const dacsample_t dac_wavetable_custom[" + str(int(length / 256)) + "][256] = {"
+for i in range(0,length):
+    if (i % 8 == 0):
+        out += "\n    "
+    if (i % 256 == 0):
+        out = out[:-2]
+        out += "{\n    "
+    waveData = waveFile.readframes(1)
+    data = struct.unpack("<h", waveData)
+    out += str(int((int(data[0]) + 0x8000) / 16)) + ", "
+    if (i % 256 == 255):
+        out = out[:-2]
+        out += "\n  },"
+out = out[:-1]
+out += "\n};"
+print(out)