Jason Derulo, Carrie Underwood and Colbie Caillat

Jun 04, 2014 on MTV at 12:00 AM

Summary

Singers take the stage and belt their best Jason Derulo, Carrie Underwood and Colbie Caillat.

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Jason Mraz, Carrie Underwood, and Kendrick Lamar
Season 1 Episode 4

Jun 03, 2014

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Katy Perry, John Mayer, and Demi Lovato
Season 1 Episode 7

Jun 05, 2014