← C♭ Locrian Natural 6 on Trombone (tenor clef)
C♭ Locrian Natural 6 — 7th chords
Four-note stacks of thirds on each degree — root, 3rd, 5th, 7th. The added 7th gives jazz, gospel, and modern classical voicings their distinctive colour.
All 7 seventh chords in sequence
Degree 1 · i°7Cbm7b5
Degree 2 · II+maj7Dbbmaj7#5
Degree 3 · iii7Ebbm7
Degree 4 · IV7Fb7
Degree 5 · Vmaj7Gbbmaj7
Degree 6 · vi°7Ab dim7
Degree 7 · vii(maj7)BbbmMaj7