Chord sequence
F♯m7 D♯m7♭5 G♯m7♭5 G7♯11
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# minor
Over F#m7 · i7
Mode 2 of Major
Over D#m7b5 · viø7
Mode 7 of Major
Over G#m7b5 · iiø7
Over G7#11 · subV7♯11
Mode 4 of Melodic Minor