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'Dancing With The Stars' 2013: Demi Lovato performs on 2nd results show

Demi Lovato returned to the ballroom on 'Dancing With The Stars: The Results Show' on April 2, 2013, to perform her latest single 'Heart Attack.' <span class=meta>(ABC Photo/ Adam Taylor)</span>
April 2, 2013 12:00:00 AM PDT