This March 26, 1971 file photo shows British rock and roll band The Rolling Stones during their farewell performance at London's Marquee Club, in London.  The band members are, from left, Mick Jagger, vocals; Mick Taylor, guitar; Keith Richards, guitar; and Charlie Watts, drums. The musician in background is unidentified. Thursday, July 12, 2012, marks 50 years since Jagger played his first gig with the band. Now in their late 60s and early 70s, the band members are celebrating the anniversary by attending a retrospective photo exhibition at London's Somerset House _ and looking to the future by rehearsing for new gigs. (AP Photo, file)

Photo by: J. MAUM

This March 26, 1971 file photo shows British rock and roll band The Rolling Stones during their farewell performance at London's Marquee Club, in London. The band members are, from left, Mick Jagger, vocals; Mick Taylor, guitar; Keith Richards, guitar; and Charlie Watts, drums. The musician in background is unidentified. Thursday, July 12, 2012, marks 50 years since Jagger played his first gig with the band. Now in their late 60s and early 70s, the band members are celebrating the anniversary by attending a retrospective photo exhibition at London's Somerset House _ and looking to the future by rehearsing for new gigs. (AP Photo, file)