"Heart Attack" is a song by American singer Demi Lovato. The song was released on February 24, 2013, as the lead single from her fourth studio album, Demi (2013). The song was produced by Mitch Allan and Jason Evigan of "The Suspex", who co-wrote the song along with Lovato, Sean Douglas, Nikki Williams, and Aaron Phillips. "Heart Attack" is an electropop song that employs cardiac motifs to represent the fear of falling in love. Music critics mostly complimented the lyrical content and Lovato's vocal range.