Harald Kloser (born July 9, 1956) is an Austrian film composer, producer and screenwriter. Since his critical and commercial breakthrough in 2005, in which he won the BMI Film Music Award for both of his scores for Alien vs. Predator and The Day After Tomorrow, he has become a regular collaborator of the latter's director, Roland Emmerich, having composed music for every one of the director's films since 2004, excluding Stonewall (2015). Out of those films, all but Anonymous (2011) have been collaborations with fellow composer Thomas Wander.

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