Chord sequence
Cm7♭5 F7 B♭m7 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
Chords 1 to 3
Cm7b5 F7 Bbm7
Chords 3 to 5
Bbm7 A7 Abmaj7
Over Cm7b5 · iiø7/ii
Mode 7 of Major
Over F7 · V7/ii
Mode 5 of Melodic Minor
Over Bbm7 · ii7
Mode 2 of Major
Over A7 · subV7
Mode 4 of Melodic Minor
Over Abmaj7 · Imaj7
The major scale and its modes are the most commonly used scales in western music.