Tony Bennett as Self

Alec Baldwin as Self

Andrea Bocelli as Self

Michael Bublé as Self

Lady Gaga as Self

Billy Joel as Self

Elton John as Self

Diana Krall as Self

K.D. Lang as Self

Wynton Marsalis as Self

Leslie Odom Jr. as Self

Rufus Wainwright as Self

Stevie Wonder as Self

Steve Buscemi as Self

Dan Castellaneta as Homer Simpson (voice)

Robert De Niro as Self

John McEnroe as Self

Regis Philbin as Self

Don Rickles as Self

Kevin Spacey as Self

Bruce Willis as Self