Blockbuster films like Twilight and The Hunger Games have produced soundtracks that have topped the Billboard 200 album charts. The upcoming teen flick The Mortal Instruments: City of Bones is hoping for similar success with its accompanying album. It chances look good with a new track by Demi Lovato.
"Heart By Heart" is, at its core, a pop ballad but with a gritty, rock edge. it showcases The X Factor judge's powerful vocals, particularly when she lets it rip at the end with a major diva belt.