Progression
The Rhythm changes (A section) in A major
Rhythm changes (A section) in A major plays A, F#m7, Bm7 and E7 — I, vi, ii and V — across 8 chords. The I–vi–ii–V harmonic backbone of the A section of 'rhythm changes', the jazz standard form built on Gershwin's 'I Got Rhythm'.
The chords, in order
1AI
2F#m7vi
3Bm7ii
4E7V
5AI
6F#m7vi
7Bm7ii
8E7V