Last Updated: Monday, 30 July 2007, 17:03 GMT 18:03 UK Paris 'to sing in rock musical' Paris Hilton served 23 days of a 45-day jail sentenceCelebrity heiress Paris Hilton has landed a part in the movie version of a futuristic rock musical, according to trade magazine Variety. She will sing in Repo! The Genetic Opera, which is set in 2056 when the human race is almost destroyed and survival depends on organ transplants. Director Darren Lynn Bousman said he auditioned 30 actresses for the part. "Paris came in and owned it," he told Hollywood trade journal Variety. "She is this...