Justin Bieber's Believe

Justin Bieber

Self

Ryan Good

Self

Usher

Self

Pattie Mallette

Self

Jeremy Bieber

Self

Mike Posner

Self

Max Martin

Self

will.i.am

Self

Rodney Jerkins

Self

Alfredo Flores

Self

Kenny Hamilton

Self

Ellen DeGeneres

Self

John Brooks

Self

Ryan Seacrest

Self

Kuk Harrell

Self

Jon M. Chu

Self

Nick DeMoura

Self

Nicki Minaj

Self

Allison Kaye

Self

Big Sean

Self

Bruce Dale

Self

Zach Galifianakis

Self

Matt Lauer

Self

Miles Brown

Self