Watch Bruno Mars Sing "Locked Out of Heaven" on X Factor 2012 Semi Finals on December 13 (VIDEO) Tweet December 13, 2012 at 09:47PM EST by Whitney Ricketts Related: The X Factor, Season 2 Contestants , Season 2 Episode 16 Credit: YouTube Bruno Mars brought his fierce pompadour swagger to The X Factor Season 2 stage on December 13, 2012, to sing Emblem3 off the show. SOB.
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