Sarah Dunant reflects on fame and the cult of celebrity following the recent success of the film "20 feet from Stardom".

The film about backing singers - the unsung heroes of pop music - scooped best documentary at the Oscars. Sarah discusses how celebrity culture has given us a society where the dream is no longer to be the backing singer, but to take centre stage. "Andy Warhol" she writes "with his fifteen minutes of fame, has turned out to be a prophet as much as an artist".

But "in a world where everyone wants to be the lead singer" she asks "who is left to swell the sound? Or more importantly to appreciate it".

Producer: Adele Armstrong.