Demi Lovato gave her fans a surprise by releasing her new song “Heart Attack” late Sunday night.

Demi Lovato Teases A New “Dope” Collaboration!

“I think the image of the video, I’m taking on a different look this time around,” she told MTV News last week. “I feel like I have my own thing going, like rocker-chic sophisticated, just a different kind of fashion style this time around.”

Listen to the song below or purchase on iTunes, and let us know what you think of the track in the comments.