Chord sequence
Fmaj7 Dm7 B♭m7 E♭7
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 F major
Chords 3 to 4
Bbm7 Eb7
Over Fmaj7 · Imaj7
The major scale and its modes are the most commonly used scales in western music.
Over Dm7 · vi7
Mode 6 of Major
Over Bbm7 · iv7
Mode 2 of Major
Over Eb7 · ♭VII7
Mode 4 of Melodic Minor