And when that happens, her first instinct-and, it turns out, her last one too-is to protect herself.

Actually falling for someone leaves her feeling dangerously vulnerable. Its lyrics center around a young woman who longs for love but is scared of giving in to it. The song throbs with the infectious lilt of Lovato’s proven pop vocal chops slathered over an up-to-the-minute EDM sonic foundation. Now, “Heart Attack” is the first salvo from her fourth album, Demi, and the 20-year-old from Albuquerque is starting to look like a genuine contender for sustained-and hopefully healthy-superstardom. Then, 2012 saw her sitting at the judges’ table for Fox’s singing competition The X Factor. In 2011, however, Lovato came roaring back with her triumphant rebuttal, Unbroken.

Sudden fame and fortune as a teen had conspired with Lovato’s inner demons and a broken romance to land her in rehab for addictions, self-harm and an eating disorder. Not so long ago, it wasn’t clear that Disney actress and singer Demi Lovato was going to make the trip, celebrity-wise.

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