The Bill Jolly Choir.
The Bill Jolly Choir has performed behind:
P!NK
Videos.
Sample the Bill Jolly Choir here.
Bill was also a member of the "We Are the World" Inauguration Choir for President Bill Clinton. Don't blink or you'll miss him (at 6:30 with his keyboard hat on behind Pres. Clinton and Harry Belafonte and next to LL Cool J.)