Ever since Demi Lovato previewed a snippet of her song "Heart by Heart" from the Mortal Instruments: City Of Bones soundtrack, we've been
impatiently waiting for the entire track to be released. Finally, the time has come!
Demi's new ballad is beautiful, mysterious, and powerful -- everything we expect from the singer! The Mortal Instruments: City of Bones soundtrack will be available for purchase on August 20.
Listen to the song below and let us know what you think!