Cast (9)
David Foster
Andrea Bocelli
Michael Bublé
Josh Groban
Kenny G
Céline Dion
Brian McKnightSelf
Katharine McPhee
Blake SheltonDavid FosterAndrea BocelliMichael BubléJosh GrobanKenny GCéline DionBrian McKnightSelfKatharine McPheeBlake Shelton