Chord sequence
Gm7 C7 Fmaj7 D7
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 3
Gm7 C7 Fmaj7
Over Gm7 · ii7
Mode 2 of Major
Over C7 · V7
Mode 5 of Major
Over Fmaj7 · Imaj7
The major scale and its modes are the most commonly used scales in western music.
Over D7 · V7/ii
Mode 5 of Melodic Minor