South Park creator on his 'Mormon' musical

The Book of Mormon, the Tony-winning musical from the creators of South Park, opened in London last night.

It's been a massive hit on Broadway, has won a string of awards and the New York Times has called it the "musical of the century".

Today presenter John Humphrys reports from a dress rehearsal London.

"It is unconventional material for a musical... that's sort of the stuff that we love," Trey Parker, creator of the musical, explained.

First broadcast on BBC Radio 4's Today programme on Tuesday 26 February 2013.