AND CHECK OUt OUR WINNING PERFORMANCE WITH DEMI LOVATO ON THE PREMIERE OF Best.Cover.Ever.

Hosted by LUDACRIS:

CELEBRITY QUOTES:

Beyoncé: "Love it"

Jimmy Fallon: "You gotta hear them, they sound fantastic. They're so talented, I love them." 

Miley Cyrus: "They're so freakin' good... I got chills."

Demi Lovato: "WOW.. This group called Ahmir, check this out... INCREDIBLE!" 

Ryan Seacrest: "Really, really good!"

TANK: "them boys can sang!!!"

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