Chord sequence
A♭m7 C7 Dmaj7 A♭7 B♭maj7 E7 G♭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 Gb major
Over Abm7 · ii7
Mode 2 of Major
Over C7 · V7/vii
Mode 6 of Blues
Over Dmaj7 · ♭VImaj7
Mode 4 of Major
Over Ab7 · V7/V
Mode 5 of Major
Over Bbmaj7 · ?
The major scale and its modes are the most commonly used scales in western music.
Over E7 · ♭VII7
Mode 4 of Melodic Minor
Over Gbmaj7 · Imaj7