INNER CODE UNIT · Python

__is_scale_tone

jisungk/deepjazz · grammar.py:16

def __is_scale_tone(chord, note):
    # Method: generate all scales that have the chord notes th check if note is
    # in names

    # Derive major or minor scales (minor if 'other') based on the quality
    # of the chord.
    scaleType = scale.DorianScale() # i.e. minor pentatonic
    if chord.quality == 'major':
        scaleType = scale.MajorScale()
    # Can change later to deriveAll() for flexibility. If so then use list
    # comprehension of form [x for a in b for x in a].
    scales = scaleType.derive(chord) # use deriveAll() later for flexibility
    allPitches = list(set([pitch for pitch in scales.getPitches()]))
    allNoteNames = [i.name for i in allPitches] # octaves don't matter

    # Get note name. Return true if in the list of note names.
    noteName = note.name
    return (noteName in allNoteNames)

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