Demi Lovato has never released a song.
Demi Lovato . The following year , Lovato was cast as the titular character of the television series Sonny with a Chance and she released her sophomore album , Here We Go Again , which became her first one to top the Billboard 200 chart . The lead single from her eponymous album , `` Heart Attack '' , became her third top 10 in the US and the album spawned three more singles . Its lead single `` Cool for the Summer '' was eventually certified double platinum by the Recording Industry Association of America .