Table 1.

Tonal hierarchies for major and minor keys.

Tonal hierarchy level	Pitch class
MAJOR
Tonic	0
Tonic triad members	4 7
Diatonic tones	2 5 9 11
Non-diatonic tones	1 3 6 8 10
MINOR (HARMONIC)
Tonic	0
Tonic triad members	3 7
Diatonic tones	2 5 8 11
Non-diatonic tones	1 4 6 9 10