Chord sequence
D♭m7 G♭7 Gdim7 A♭m7
In every key
Four-note rootless voicings in their two forms, with the 3rd or the 7th on the bottom, played over the root.
Heard in Ab minor
Chords 1 to 2
Dbm7 Gb7
Over Dbm7 · iv7
Mode 2 of Major
Over Gb7 · ♭VII7
Mode 5 of Major
Over Gdim7 · vii°7
Mode 7 of Harmonic Minor
Over Abm7 · i7