"A Funny Thing Happened On The Way To Cure Parkinson's" Benefit- Inside

NEW YORK - NOVEMBER 21: * EXCLUSIVE * Gregg Allman, Elvis Costello and John Popper perform onstage during The Michael J. Fox Foundation�s 2009 Benefit, "A Funny Thing Happened on the Way to Cure Parkinson's" at The Waldorf Astoria Hotel on November 21, 2009 in New York City. (Photo by Kevin Mazur/MJF/WireImage for The Michael J. Fox Foundation)