Chord sequence
F♯maj7 D♯7 G♯m7 C♯7
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
All the chords
The standard turnaround back to the top of a major tune, with VI7, the dominant of ii, in place of the diatonic vi chord.
Over F#maj7 · Imaj7
The major scale and its modes are the most commonly used scales in western music.
Over D#7 · V7/ii
Mode 5 of Melodic Minor
Over G#m7 · ii7
Mode 2 of Major
Over C#7 · V7
Mode 5 of Major