In the spotlight: Darlene Love, Lisa Fischer, Merry Clayton and Judith Hill
Their voices are known to millions, heard on some of the most famous songs ever recorded.
But who were the backing singers on songs like The Rolling Stones' Gimme Shelter or David Bowie's Young Americans?
All is revealed in Morgan Neville's Oscar-nominated documentary 20 Feet From Stardom, which shines a spotlight on the unsung world of the back-up vocalist.
The film includes interviews with Bruce Springsteen, Stevie Wonder, Mick Jagger and Sting.
But its real stars are singers such as Darlene Love, Judith Hill, Merry Clayton, Lisa Fischer and Tata Vega. The success of the documentary has seen many of them enjoying a huge career boost.
Director Morgan Neville tells about making 20 Feet From Stardom, his Oscar hopes for the film and how it could become a stage musical
EmoticonEmoticon