Demi Lovato has released a new song and music video, 'Fast,' which premiered on Friday, August 1. "I wanna go fast, I wanna go hard," she sings.

Demi Lovato is back in the studio – and she's offering a sultry new song for the summer.

American musician Demi Lovato has debuted her highly anticipated single, 'Fast'. The dance-pop single is already a hit with ...