lfnoise

This is a chart of all 7 note pitch sets which have at least one mode which is a viable heptatonic scale.

A viable heptatonic scale is one where:

	there are 7 distinct pitches.
	the first degree is 0 semitones.
	the second degree is 1, 2 or 3 semitones.
	the third degree is 3 or 4 semitones.
	the fourth degree is 5 or 6 semitones.