Plays random notes.

musicbox.py

"MusicBox"
# SPDX-FileCopyrightText: 2023 Randall Bohn
# SPDX-License-Identifier: MIT
# Feather RP2040 with speaker on A0

import time
import board
import audiomixer
import audiopwmio
import random
import synthio

RATE=44000
dac = audiopwmio.PWMAudioOut(board.A0)
mix = audiomixer.Mixer(channel_count=1, sample_rate=RATE)
synth = synthio.Synthesizer(sample_rate=RATE)
slow = synthio.Envelope(attack_time=0.2, sustain_level=1.0, release_time=0.8)
pluck = synthio.Envelope(attack_time=0, decay_time=0.4, sustain_level=0)
synth.envelope=pluck

dac.play(mix)
mix.voice[0].play(synth)
mix.voice[0].level=0.2
aeolian = [55, 57, 58, 60, 62, 63, 65]
b_flat = [58, 60, 62, 63, 65, 67, 69]

while True:
    note = random.choice(aeolian)
    synth.press(note)
    time.sleep(random.choice([0.2,0.4,0.4,0.4,0.8]))
    synth.release(note)