Chord sequence
Dm7♭5 G7 Cm7 B7 B♭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 Bb major
Chords 1 to 3
Dm7b5 G7 Cm7
Chords 3 to 5
Cm7 B7 Bbmaj7
Over Dm7b5 · iiø7/ii
Mode 7 of Major
Over G7 · V7/ii
Mode 5 of Melodic Minor
Over Cm7 · ii7
Mode 2 of Major
Over B7 · subV7
Mode 4 of Melodic Minor
Over Bbmaj7 · Imaj7
The major scale and its modes are the most commonly used scales in western music.