Calificación
Reparto

Justin Bieber
Justin Bieber

Nicole Scherzinger
Nicole Scherzinger

Jennifer Hudson
Jennifer Hudson

Jennifer Nettles
Jennifer Nettles

Josh Groban
Josh Groban

Tony Bennett
Tony Bennett

Mary J. Blige
Mary J. Blige

Toni Braxton
Toni Braxton

Michael Jackson
Michael Jackson (archive footage)

Janet Jackson
Janet Jackson

Barbra Streisand
Barbra Streisand

Miley Cyrus
Miley Cyrus

Enrique Iglesias
Enrique Iglesias

Jamie Foxx
Jamie Foxx

Wyclef Jean
Wyclef Jean

Adam Levine
Adam Levine