A concert celebration of New Orleans songwriter-producer Allen Toussaint's 75th birthday, featuring Elvis Costello, Dr. John, Trombone Shorty, Irma Thomas, Deacon John, Joe Henry, Cyril Neville and Toussaint himself. Interspersed throughout: segments chronicling his accomplishments in and out of the recording studio; and remarks from such fellow musicians as Jimmy Buffett, Cyndi Lauper and Robert Plant.