Compay Segundo · Son
Chan Chan
Key of Dm · Slow son
Four-bar vamp the whole tune. The tres montuno hangs on the A7 → Dm pull, with the F and Gm passing through the middle of each cycle.
Progression
‖: Dm | F | Gm | A7 :‖
Chord shapes
Dm
D · F · A
F
F · A · C
Gm
G · D · Bb
A7
A · C# · G