Fans of Cassandra Clare's best-selling novel, "The Mortal Instruments: City of Bones," are in for a treat with the official soundtrack. Shadowhunters better prepare their eardrums for the official movie soundtrack set to hit stores on August 20. Great news about it is that "X-Factor's" Demi Lovato has one song included in the track listing.

Republic Records, Screen Gems and Constantin Film have finally released the track listing of the official movie soundtrack of "The Mortal Instruments." The soundtrack of highly-anticipated film adaptation features a mix of artists. New songs from Colbie Caillat, Zedd, Jessie J and Demi Lovato are set to be featured on the album. The full track listing is listed below:

1. Zedd, "Into The Lair"
2. Jessie J, "Magnetic"
3. AFI, "17 Crimes (LA Riots Remix)"
4. Demi Lovato, "Heart By Heart"
5. Youngblood Hawke, "Bring Me Home"
6. Colbie Caillat, "When The Darkness Comes"
7. Seven Lions with Myon & Shane 54 featuring Tove Lo, "Strangers"
8. Pacific Air, "Bear"
9. He Is We featuring Owl City, "All About Us"
10. Bassnectar, "Calling From Above"
11. Jetta, "Start A Riot"
12. Bryan Ellis, "Strange Days"

For those who have only heard of Cassie Clare's novels only now, here's a synopsis of the first book set to hit theatres by August 21, 2013.

"When fifteen-year-old Clary Fray heads out to the Pandemonium Club in New York City, she hardly expects to witness a murder -- much less a murder committed by three teenagers covered with strange tattoos and brandishing bizarre weapons. Then the body disappears into thin air. It's hard to call the police when the murderers are invisible to everyone else and when there is nothing -- not even a smear of blood -- to show that a boy has died. Or was he a boy?"

"This is Clary's first meeting with the Shadowhunters, warriors dedicated to ridding the earth of demons. It's also her first encounter with Jace, a Shadowhunter who looks a little like an angel and acts a lot like a jerk. Within twenty-four hours Clary is pulled into Jace's world with a vengeance, when her mother disappears and Clary herself is attacked by a demon. But why would demons be interested in ordinary mundanes like Clary and her mother? And how did Clary suddenly get the Sight? The Shadowhunters would like to know. . . . "

"Exotic and gritty, exhilarating and utterly gripping, Cassandra Clare's ferociously entertaining fantasy takes readers on a wild ride that they will never want to end."

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