Tony Bennett

Self

Christina Aguilera

Self

Billy Crystal

Self

K.D. Lang

Self

John Legend

Self

Catherine Zeta-Jones

Self

Juanes

Self

Chris Botti

Self

Diana Krall

Self

Elton John

Self

Michael Bublé

Self

John Travolta

Self

Stevie Wonder

Self

Barbra Streisand

Self

Robert De Niro

Self - Speaker

Bruce Willis

Self - Speaker