Progression
The Rhythm changes (A section) in E major
Rhythm changes (A section) in E major plays E, C#m7, F#m7 and B7 — 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
1EI
2C#m7vi
3F#m7ii
4B7V
5EI
6C#m7vi
7F#m7ii
8B7V