The man who starred in The Good, The Bad, & The Ugly, all the Dirty Harry movies and, uh, Space Cowboys, has already expanded his repertoire to working behind the camera, as well as acting. But now, according to Undercover Media, Clint Eastwood is taking it a step further and has written the score to his next film as well. Eastwood, who has earned his stripes as a jazz musician has scored his next film, Mystic River. The movie also stars Laurence Fishbourne, Tim Robbins, Sean Penn and Kevin Bacon and is based on the book by Dennis Lehane. Look for the film to debut next month, with the soundtrack in the budget bin just in time for the Christmas rush.