pub fn complete_hexatonic(chord: &Chord, respell: Respell) -> Result<Vec<Chord>>Expand description
The six triads of chord’s hexatonic cycle, PLPLPL, ending on
chord again or its enharmonic: music21’s completeHexatonic. With
Respell::Simplify each step is respelled before the next is taken.
§Errors
A chord that is not a major or minor triad.