Hear the full lineup TOMORROW at 9am ET/6amPT
Listen to their new song 'Superheroes'
Watch Mraz perform music from his new album YES! and old favorites!
Selena turns 22 today - her GOLDEN birthday!
Click here to enter!
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The Next Han Solo: Chris Pratt on His Star-Making Turn in ‘Guardians of the Galaxy’
Cops Called To Justin Bieber's Condo Party Six Times