These modes are more awkward to use than those of the diatonic scales due to the four tones in a row yielding augmented intervals on one hand while the one tone between two semitones gives rise to diminished intervals on the other.
12.
Under inversion, perfect intervals remain perfect, major intervals become minor and vice versa, augmented intervals become diminished and vice versa . ( Double diminished intervals become double augmented intervals, and vice versa . ) Traditional interval names add together to make nine : seconds become sevenths and vice versa, thirds become sixes and vice versa, and fourths become fifths and vice versa.
13.
Under inversion, perfect intervals remain perfect, major intervals become minor and vice versa, augmented intervals become diminished and vice versa . ( Double diminished intervals become double augmented intervals, and vice versa . ) Traditional interval names add together to make nine : seconds become sevenths and vice versa, thirds become sixes and vice versa, and fourths become fifths and vice versa.
