When Demi Lovato isn't parked behind the judges' table on The X Factor, she's a singer, she reminded viewers on Jimmy Kimmel Live last night. Lovato hit the outdoor stage for a performance of her thumping new single, "Heart Attack," which is on her upcoming fourth album, Demi. Lovato let her voice soar as lights flashed and, at the end, jets of steam erupted. Cardiac arrest has rarely looked like more fun.
Speaking of The X Factor, Lovato will rejoin Simon Cowell for the third season this fall. Demi is due out on May 14th.