Alien vs. Predator: Original Motion Picture Soundtrack is the official soundtrack album of the 2004 science fiction film Alien vs. Predator. Composed by Austrian Harald Kloser, Kloser was chosen by the film's director Paul W. S. Anderson, as he was an enthusiastic fan of the series. The score is completely orchestral and was released on August 9, 2004 on iTunes and on August 31, 2004 on Audio CD and Compact Cassette by Varèse Sarabande and Fox Music.