The New York City Opera has commissioned Charles Wuorinen to compose an opera based on Brokeback Mountain. The opera is scheduled to premiere in spring 2013, City Opera said at the weekend. It will be City Opera's second Wuorinen premiere, following Haroun and the Sea of Stories, which was based on a Salman Rushdie novel and opened in October 2004. "Ever since encountering Annie Proulx's extraordinary story I have wanted to make an opera on it, and it gives me great joy that Gerard Mortier and New York City Opera have given me the opportunity to do so," Wuorinen says. Annie Proulx's 1997 short story became the basis for Brokeback Mountain, a three-Oscar-winning 2005 movie of love between two men.