Chord sequence
Dm7 G7 G♯dim7 Am7
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 A minor
Chords 1 to 2
Dm7 G7
Over Dm7 · iv7
Mode 2 of Major
Over G7 · ♭VII7
Mode 5 of Major
Over G#dim7 · vii°7
Mode 7 of Harmonic Minor
Over Am7 · i7