MIDI

Generate MIDI in python

How to generate music with Python: The Basics | by Steve Hiehn | Medium

FlipperPA/midi-writer: A library to use Python to write MIDI files.

MIDI to audio

bzamecnik/midi2audio: Play and synthesize MIDI to audio - easy to use Python/CLI API to FluidSynth.

FluidSynth/fluidsynth: Software synthesizer based on the SoundFont 2 specifications

FluidSynth 软件使用教程（可以将 MIDI 转换为 WAV）-CSDN博客

Audio to MIDI

spotify/basic-pitch: A lightweight yet powerful audio-to-MIDI converter with pitch bend detection