Progression
The Blues turnaround in F# major
Blues turnaround in F# major plays F#, D#7, G#m7 and C#7 — I, VI, ii and V — across 4 chords. I–VI7–ii7–V7, the four-bar turnaround that closes a blues chorus and sets up the next one.
The chords, in order
1F#I
2D#7VI
3G#m7ii
4C#7V