Chord sequence
Gm7 C7 D♭dim7 Dm7
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 D minor
Chords 1 to 2
Gm7 C7
Over Gm7 · iv7
Mode 2 of Major
Over C7 · ♭VII7
Mode 5 of Major
Over Dbdim7 · ♭i°7
Mode 7 of Harmonic Minor
Over Dm7 · i7