핑크와 제니퍼허드슨은 굉장한듯,,

셀린디온역시

참여가수 쩌네요 =ㅂ=

가수 순서
Justin Bieber / Nicole Scherzinger / Jennifer Hudson / Jennifer Nettles / Josh Groban
Tony Bennett / Mary J. Blige  / Michael Jackson  / Janet Jackson / Barbra Streisand
Miley Cyrus / Enrique Iglesias / Jamie Foxx / Wyclef Jean / Adam Levine / Pink
BeBe Winans / Usher / Celine Dion / Fergie / Nick Jonas (Of Jonas Brothers)
Toni Braxton / Mary Mary / Isaac Slade / Lil Wayne / Carlos Santana (Solo With A Guitar)
Akon / T-Pain / LL Cool J / Will.i.am / Snoop Dogg / Busta Rhymes / Swizz Beatz
Iyaz / Kanye West

코러스만 참여한 가수들

Patti Austin / Zac Brown / Jimmy Jean-Louis / A. R. Rahman  / Gladys Knight / Shakira
Rob Thomas / Musiq Soulchild / Randy Jackson  / Taj Jackson / Taryll Jackson / TJ Jackson
Sean Garrett / Benji Madden / Joel Madden / Al Jardine / India.Arie / Brian Wilson

/Julianne Hough Keri Hilson / Tyrese Gibson / Robin Thicke / Joe Jonas / Kevin Jonas

Trey Songz / Jason Mraz /Harry Connick Jr. / Vince Vaughn / Ethan Bortnick

Katharine McPhee / Faith Evans / Kid Cudi
Bizzy Bone / Jeff Bridges / Raphael Saadiq / Hilary Duff / Ann Wilson / Nancy Wilson

Orianthi (Also On Guitar) / Anthony Hamilton