Demi Lovato is lending her instrument to the upcoming The Mortal Instruments…

The 20-year-old part-Mexican American singer/actress and The X Factor judge  will be featured on the soundtrack for the upcoming film The Mortal Instruments: City Of Bones.

Lovato has recorded a song called “Heart by Heart” for the soundtrack, which is set to for release on August 20.

Other acts featured are DJ and producer Zedd with “Into The Lair,” AFI‘s “17 Crimes (LA Riots Remix)” and a collaboration from He Is We and Owl City entitled “All About Us.”

Based on the first book in Cassandra Clare‘s young adult novel series, The Mortal Instruments, follows Clary Fray – portrayed by Lily Collins – a young woman who discovers that she’s a Shadowhunter: a half-angelic being charged with protecting the world from demons. Joined by fellow Shadowhunter Jace – portrayed by Collins’ real-life boyfriend Jamie Campbell Bower – she sets off on the trail of her missing mother as she learns to control her powers.

The Mortal Instruments: City of Bones will be released in August.