chaudio.util.chords module

Chord utilities

These are functions for chord generation

chaudio.util.chords.first(base)

chaudio.util.chords.second(base, minor=False)

chaudio.util.chords.third(base, minor=False)

chaudio.util.chords.fourth(base)

chaudio.util.chords.tritone(base)

chaudio.util.chords.fifth(base)

chaudio.util.chords.sixth(base, minor=False)

chaudio.util.chords.seventh(base, minor=False)

class chaudio.util.chords.Chord(notes, **kwargs)

Bases: object

__init__(notes, **kwargs)

copy()

get_notes(root='A')

__getitem__(key)

invert(change=1)

inverted(change=1)

transpose(change)

transposed(change)

__str__()

__len__()

__add__(val)

__dict__ = mappingproxy({'copy': <function Chord.copy>, '__getitem__': <function Chord.__getitem__>, '__len__': <function Chord.__len__>, 'inverted': <function Chord.inverted>, '__weakref__': <attribute '__weakref__' of 'Chord' objects>, 'transposed': <function Chord.transposed>, '__str__': <function Chord.__str__>, 'transpose': <function Chord.transpose>, '__init__': <function Chord.__init__>, '__doc__': None, '__module__': 'chaudio.util.chords', '__dict__': <attribute '__dict__' of 'Chord' objects>, 'invert': <function Chord.invert>, 'get_notes': <function Chord.get_notes>, '__add__': <function Chord.__add__>})

__module__ = 'chaudio.util.chords'

__weakref__

list of weak references to the object (if defined)

class chaudio.util.chords.Triad(**kwargs)

Bases: chaudio.util.chords.Chord

__init__(**kwargs)

__module__ = 'chaudio.util.chords'

chaudio.util.chords.from_notation(notation)

notation should be like:

(assumes C base)

“I” C major

“iii” E minor

“biii” Eb minor

“#III” E# (F) major

“I7b” (dominant seventh)

“I7” (major seventh)

“i7” (minor seventh)

chaudio.util.chords.progression(base, progression)

progression should be like:

“I-IV-V-IV”

“I-iii-IV”