Chord sequence
A♭m7 D♭m7 A♭m7 E7 E♭7alt A♭m7 B♭m7♭5 E♭7alt
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
All the chords
The 12-bar blues in a minor key: minor 7ths on i and iv, and a bVI7 falling by half step to an altered V7 in bars 9 and 10.
Chords 7 to 8
Bbm7b5 Eb7alt
Over Abm7 · i7
Mode 2 of Major
Over Dbm7 · iv7
Over E7 · ♭VI7
Mode 4 of Melodic Minor
Over Eb7alt · V7alt
Mode 7 of Melodic Minor
Over Bbm7b5 · iiø7
Mode 7 of Major