jchord 3.0.0

Python toolkit for working with chord progressions

jchord - toolkit for working with chord progressions

jchord provides tools for working with chord progressions.

jchord:

• has object representations for notes, chords, and progressions (in the Western 12-tone system)

• knows about naming conventions for chords, and can convert back and forth between objects and names

• can be used as a converter between strings, text files, XLSX files, and MIDI files.

Here is an example that parses a chord progression written as a string, transposes it upwards by 2 semitones, converts it back to a string and then creates a midi file from it.

>>> from jchord import ChordProgression, MidiConversionSettings
>>> prog = ChordProgression.from_string("C -- Fm7 -- C -- G7 -- C -- E7 Am F Bm7b5 E7 Am9 F Bo C69 --")
>>> prog = prog.transpose(+2)
>>> print(prog.to_string())
D       --      Gm7     --
D       --      A7      --
D       --      F#7     Bm
G       C#m7b5  F#7     Bm9
G       C#o     D69     --
>>> prog.to_midi(MidiConversionSettings(filename="example.midi", tempo=100, beats_per_chord=2, instrument=4))

For more examples, see the documentation.

Documentation

Documentation lives here: jonathangjertsen.github.io/jchord/

Contributing