Relativity Music Group has announced the official soundtrack release for the upcoming drama Machine Gun Preacher. The album includes 15 tracks from the original score by Asche & Spencer (Monster’s Ball, Stay). The music was recorded with the 60-piece Slovak National Symphony Orchestra in Bratislava. Also on the album is the original song The Keeper by Chris Cornell (Casino Royale). The song can be checked out on Cornell’s official website and is available to download on Amazon. The full soundtrack will be released on September 20, 2011. Check back on this page for the full details of the release. Machine Gun Preacher is directed by Marc Forster and stars Gerard Butler, Michelle Monaghan and Michael Shannon. The movie tells the story of Sam Childers, a former drug-dealing biker tough guy who found God and became a crusader for hundreds of Sudanese children who’ve been forced to become soldiers. The drama will be released in New York and Los Angeles on September 23 and expand to more cities in the following weeks. To learn more about the film, visit the official movie website.