I'm The One DJ Khaled feat. Justin Bieber
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20 Of The Best Music Videos Of 2013 So Far
2013 is Demi Lovato's year and her huge hit single 'Heart Attack' has only proved this, showcasing the X Factor USA judge's incredibly vocal talents. Her suitably epic music video has also gone down a storm, letting Demi show off a variety of incredible looks, as well as adding a sense of scale to the powerful love song.