← F♭ Locrian Natural 6 on Guitar
F♭ 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°7Fbm7b5
Degree 2 · II+maj7Gbbmaj7#5
Degree 3 · iii7Abbm7
Degree 4 · IV7Bbb7
Degree 5 · Vmaj7Cbbmaj7
Degree 6 · vi°7Db dim7
Degree 7 · vii(maj7)EbbmMaj7