David Foster

as Self

Seal

as Self

Donna Summer

as Self

Martina McBride

as Self

Natalie Cole

as Self

Ruben Studdard

as Self

Jake Zyrus

as Self

Chaka Khan

as Self

Kenny Loggins

as Self

Michael Bolton

as Self

Jackie Evancho

as Self

Lara Fabian

as Self

Gary Wright

as Self