Demi Lovato's Mortal Instruments Song Is MARVELOUS! Listen To The Full Version Of Heart By Heart HERE!
Demetria Devonne Lovato has done it again!
And it's friggin' AH-Mazing!!!
Ch-ch-check out her heart-melting track (above)!
Wowz!!! The super talented and totally lovely singer of Fix a Heart, Give Your Heart a Break, and Heart Attack broke ALL the rules with Heart by Heart!
Two hearts in one track title? Dammit, Demi — that's crazy enough to work!
The Mortal Instruments: City of Bones hits theaters August 21.