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MacWorld 1999 January - Disc 2
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Macworld (1999-01) (Disk 2).dmg
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map-to-hindemith-groups
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1998-10-22
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map-to-hindemith-groups chords
this function is used by hindemith-chord-mask but if you
want to see what groups your chords belong to and want
to write your own functions here it is.
(map-to-hindemith-groups
'(aeh adi ach acf aei aek adhj agk aegk aehkn aegl adg))
->((a-1-1) (a-1-2) (a-3-1) (a-3-2) (a-5) (b-2-a) (b-2-1) (b-2-2) (b-2-a) (b-4-1) (b-4-2) (b-6))
The groups are:
A: without tritone B: with tritone
A-1: without seconds or sevenths
A-1-1: root and basetone are identical
A-1-2: root lies above the base tone
A-3: containing seconds or sevenths or both
A-3-1 root and basetone are identical
A-3-2 root lies above the base tone
A-5 indeterminate
B-2: without minor seconds or major sevenths
B-2-A: with minor seventh only (no major second)
root and basetone are identical
B-2-B: containing major seconds or minor sevenths or both
B-2-1: root and basetone are identical
B-2-2: root lies above the base tone
B-2-3: containing more than one tritone
B-4: containing minor seconds or major sevenths or both
one or more tritones subordinate
B-4-1: root and basetone are identical
B-4-2: root lies above the base tone
B-6: indeterminate tritone predominating
the tension order would be:
A-1-1 A-1-2 B-2-A B-2-1 B-2-2 B-2-3 A-3-1 A-3-2
B-4-1 B-4-2 A-5 B-6
see also hindemith-chord-mask that lets you
reorder chords by tension after a mask
and get-chord-roots