Neil Young

as Self

James Taylor

as Self

Keith Urban

as Self

Elvis Costello

as Self

Jason Mraz

as Self

Elton John

as Self

Dave Matthews

as Self

Norah Jones

as Self

Ben Harper

as Self

Josh Groban

as Self

Hillary Scott

as Self

Dave Haywood

as Self

Charles Kelley

as Self

Sheryl Crow

as Self