<P> Byung - hun Lee plays Billy Rocks, ("the Assassin") the knife wielding Asian member of the seven . Director Antoine Fuqua compared the way he handled his knives to a ballet dancer . </P> <P> James Horner was tapped to write the film's score, but he died in June 2015, before filming could commence . In July 2015, Fuqua learned that Horner had already begun working on the music before his passing, and had intended to present it as a surprise . Horner's friend and score producer Simon Franglen co-composed the score afterward . It was released on September 16, 2016 by Sony Classical, and is the third Horner - score released posthumously . </P> <P> Principal photography on the film lasted 64 days, from March 18 to August 18, 2015, in the north of Baton Rouge, Louisiana . Other locations include St. Francisville; Zachary, Louisiana; Ridgway, Colorado; and New Mexico . Filming in St. Francisville was completed between May 18 and May 29, 2015 . </P> <P> The climactic battle between the Seven and a small army led by Bogue took three weeks to shoot; the weather was inclement . Sometimes the cast and crew would wait in the on - set saloon for storms to pass, and, at times when the storm would worsen, the trailer would rock and they would have to leave the set . Since his grandmother was the prime influence on the film, every day after filming, Fuqua would ask himself if she would have fun watching it . </P>

Where was the new magnificent seven movie filmed
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