PyTheory: Music Theory for Humans¶
PyTheory is a Python library that makes exploring music theory approachable. Work with tones, scales, chords, and fretboards using a clean, Pythonic API.
from pytheory import TonedScale, Fretboard, CHARTS
# Build a C major scale
c_major = TonedScale(tonic="C4")["major"]
print(c_major.note_names)
# ['C', 'D', 'E', 'F', 'G', 'A', 'B', 'C']
# Build a triad from the scale
chord = c_major.triad(0) # C major triad
for tone in chord:
print(f"{tone}: {tone.frequency:.1f} Hz")
# Get guitar fingerings
fb = Fretboard.guitar()
print(CHARTS["western"]["C"].fingering(fretboard=fb))
