Pi: The song

Full lyrics here

The chorus goes:

CHORUS:
A   D        A       E
Pi, pi, mathematical pi
A       D  A  E
3 point 14 15 92
A  D  A  E
65 35 89 7
F#m    B7
932384 62
F#m     E7
6433832 7 (not rounded)

You can download the mp3 HERE

Or you can sing the PI Rap song.

Or for the older generation, here are Pi Day Carols.