Chord sequence
C♯m7 F♯7 Gdim7 G♯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 G# major
Chords 1 to 2
C#m7 F#7
Over C#m7 · iv7
Mode 2 of Major
Over F#7 · ♭VII7
Mode 4 of Melodic Minor
Over Gdim7 · ♭i°7
Mode 7 of Harmonic Minor
Over G#maj7 · Imaj7
The major scale and its modes are the most commonly used scales in western music.