Demi Lovato's "Heart Attack" is finally here! After releasing a teaser to her new single earlier this month, the pop singer and former "X Factor USA" judge surprised fans by sharing the song in its entirety last night on the "On Air with Ryan Seacrest" website.
"I think I’ve opened up more," Demi said about the new album. "My life began to evolve and I started to grow. These are songs about the celebrations of life and how rewarding it can be.”
Listen to the dance-worthy track in the video above and sound off with your thoughts in the comments, or tweet @HuffPostTeen!