Chord sequence
B♭m7 F7 Emaj7 D♭7 Cmaj7 A7 A♭maj7
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 major
Over Bbm7 · ii7
Mode 2 of Major
Over F7 · subV7/♭VI
Mode 4 of Melodic Minor
Over Emaj7 · ♭VImaj7
Mode 4 of Major
Over Db7 · subV7/III
Over Cmaj7 · ?
The major scale and its modes are the most commonly used scales in western music.
Over A7 · subV7
Over Abmaj7 · Imaj7