transcription-and-notation-with-pytheory

name	transcription-and-notation-with-pytheory
description	Transcribe audio and convert between music formats with PyTheory. Use when the user wants to turn a recording (WAV/hum/melody) into notes or MIDI, identify the chord in an audio clip, import a MIDI file, or export a score/melody to MIDI, sheet music (MusicXML, LilyPond, ABC), or guitar tab.
license	MIT
allowed-tools	Write, Read, Bash(python3:*), Bash(uv run:*)

Transcription & Notation

Getting music into PyTheory from audio/MIDI, and out to MIDI, sheet music, and tab.

Transcribe a recording → notes / MIDI

from pytheory import Score

score = Score.from_wav("hum.wav", bpm=80)        # estimates tempo if bpm omitted
for name, part in score.parts.items():
    print(name, len(part.notes), "notes")
score.save_midi("hum.mid")

• Score.from_wav(path, *, bpm=None, quantize=None, split=False, fmin=50, fmax=1500). quantize=0.25 snaps to sixteenths; split=True separates a full mix into bass + melody (and drums) instead of one monophonic part.