LATEST: Tim Burton has hailed Sacha Baron Cohen's singing ability in the face of media reports suggesting his songs have been cut from the forthcoming SWEENEY TODD movie. The BORAT and ALI G creator plays SIGNOR ADOLFO PIRELLI - the arch-rival of Johnny Depp's SWEENEY TODD, The Demon Barber Of Fleet Street - in the big screen version of the hit musical. And Burton laughs of claims he had instructed Cohen to rap his songs instead of singing them. He says, "Sacha will surprise everyone. When he auditioned for me, he sang Fiddler on the Roof without accompaniment and was incredible. "Stephen Sondheim, who wrote the original Broadway musical, loves Sacha's voice."