Chord sequence
C7 F7 B♭7 E♭7 Dmaj7
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 Bb major
Over C7 · V7/V
Mode 5 of Major
Over F7 · V7
Over Bb7 · V7/IV
Over Eb7 · subV7/III
Mode 4 of Melodic Minor
Over Dmaj7 · ?
The major scale and its modes are the most commonly used scales in western music.