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Director Jon Brewer on his B.B. King documentary

15 October 2012 Last updated at 17:33 BST

B.B. King's long career is the subject of a British documentary directed by Jon Brewer.

The Life of Riley features Eric Clapton, Ringo Starr and is narrated by Morgan Freeman.

The Mississippi-born blues singer and guitarist was named Riley B King in 1925, which explains the title of the film.

Jon Brewer told BBC Radio 5 liveUp All Night how he came to be involved in making the film.

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