Topic summary
Film composer

Extracted from the Wikipedia article Film score.
Temp tracks
In some instances, film composers have been asked by the director to imitate a specific composer or style present in the temp track. On other occasions, directors have become so attached to the temp score that they decide to use it and reject the original score written by the film composer. One of the most famous cases is Stanley Kubrick's 2001: A Space Odyssey, where Kubrick opted for existing recordings of classical works, including pieces by composer György Ligeti rather than the score by Alex North, though Kubrick had also hired Frank Cordell to do a score. Other examples include Torn Curtain (Bernard Herrmann), Troy (Gabriel Yared), Pirates of the Caribbean: The Curse of the Black Pearl (Alan Silvestri), Peter Jackson's King Kong (Howard Shore), Air Force One (Randy Newman) and The Bourne Identity (Carter Burwell).