HEART∞BREAKER

"HEART∞BREAKER" is the theme song of Kamen Rider × Kamen Rider OOO & W Featuring Skull: Movie War Core.
 * Lyrics: Maki Ohguro
 * Composition: Koji Kikkawa
 * Arrangement: Hiroaki Sugawara
 * Artist: DaiKichi (Daikichi～大吉～)
 * Daikichi is a musical unit composed of Koji Kikkawa and Maki Ohguro using the first kanji of their surnames. This name is literally translated as "Great Luck". The unit was originally named "Koji Kikkawa × Maki Ohguro" (吉川晃司×大黒摩季). The single is scheduled for release on December 15, 2010.

The film's soundtrack was released on December 15, 2010. The movie's music includes "Got to Keep it Real", "Nobody's Perfect", and a track titled "Finally", sung by series' actress Hikaru Yamamoto as her character Melissa. "Finally" was written & arranged by Shoko Fujibayashi, and composed by Shuhei Naruse, used during the Kamen Rider Skull: Message for Double portion of the film where the character of Melissa performs at a concert. Other versions of "Finally" can be heard during Kamen Rider OOO: Nobunaga's Desire.