Heart Attack

This celebration of life and love was released as the first single from Demi Lovato's fourth studio album. "The title is just about falling in love and taking that risk," Lovato told MTV News. "But, she's terrified and, by 'she,' I mean me. But, I think everyone comes to a point where they feel very vulnerable in falling in love and that's what I'm talking about." The song premiered via international streaming on February 24, 2013 and was exclusively released on iTunes a few hours later in the United States.

The song was produced by the Suspex (Mitch Allan and Jason Evigan) and was co-written by the production duo with Lovato, Sean Douglas and Nikki Williams.

Demi shot the cover for the single hours after breaking her leg. The accident happened as a result of Demi slipping on the floor after her roommate cleaned it with Pledge. "Thank God I went, because it's my favorite photo shoot I've ever done," the singer told Extra's Renee Bargh, "and they were able to shoot it so you don't see my foot."