19edo Chord Names

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Various 19edo triads, 6th and 7th chords, named via ups and downs. Not meant to be exhaustive, but this list does demonstrate the basic rules for naming. The aug 6th and the dim 7th are the same interval, and chords that use that interval can be named as either a 6th chord or a 7th chord.

d3 m3 M3 A3 P4
triad C(d3) Cm C C(A3) C4
M6 C6(d3) Cm6 C6 C6(A3) C4,6












m7 C7(d3) Cm7 C7 C7(A3) C4,7
M7 CM7(d3) CmM7 CM7 CM7(A3) C4M7
A7 CA7(d3) CmA7 C,A7 C(A3)A7 C4A7

A comma (the actual punctuation mark ",") is spoken as "add", thus C,v7 is "C add-down-seven". The only exception is when a comma separates two numbers, as in C4,7 which is "C four-seven". A comma is written, and "add" is spoken, whenever not doing so would cause confusion with another chord.

4:5:6:7 = C E G vBb is named C add-dim7. To get a shorter name for this important chord, one could call it a harmonic7 chord, or one could borrow from color notation to call it a har7 chord, written Ch7. Names for subharmonic chords can be similarly shortened.

chord notes ups and downs name color name
4:5:6:7 C E G Bbb C add-dim-7 C,d7 C har7 Ch7
7/(7:6:5:4) C Ebb Gbb Bbb C dim-3 dim-7 double-dim5 C(d3)d7(dd5) C sub7 Cs7
12/(12:10:8:7) C Eb G A# C minor aug-6 CmA6 C sub6 Cs6

See also: