Chord sequence
B♭m7 E♭7 Edim7 Fmaj7
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 1 to 2
Bbm7 Eb7
Over Bbm7 · iv7
Mode 2 of Major
Over Eb7 · ♭VII7
Mode 4 of Melodic Minor
Over Edim7 · vii°7
Mode 7 of Harmonic Minor
Over Fmaj7 · Imaj7
The major scale and its modes are the most commonly used scales in western music.