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Best of 2012 Pop Mash-Up

Justin Bieber, Rihanna, Katy Perry & More!

Dec 4, 2012

This year’s biggest artists are ringing in the new year with an epic collaboration.

Justin Bieber, Katy Perry, Demi Lovato, Maroon 5, J-Lo and Psy bring the year to a close with a mash up of 2012′s best songs! Listen to the mix here, then tell us how much you love it in the comments below.

Tags:  Demi Lovato , J-lo , Justin Bieber , Katy Perry , Maroon 5 , Psy

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