has he collaborated with other artistes outside of the band?
Yes. With Ronnie Wood
Keith Richards
In the 1970s Richards worked outside the Rolling Stones with Ronnie Wood on several occasions, contributing guitar, piano, and vocals to Wood's first two solo albums 
what are the band members names of the rolling stones Brian Jones, Mick Jagger, Keith Richards, Bill Wyman, Charlie Watts and Ian Stewart what was their first hit? "The Rolling Stones No. 2" did any band member undergo a surgery? Yes. Mick Jagger underwent heart valve replacement surgery has this musician appeared in any movies? Yes. "Performance" what was his relationship like with the third member mentioned above? It is frequently described as "love/hate" by the media what was the third member's role in the band? Co-founder, guitarist, secondary vocalist and co-principal songwriter anything special about the instruments he uses? He has a collection of approximately 3,000 guitars and his amplifier preferences have changed repeatedly
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Keith Richards [SEP] Recordings with other artists
During the 1960s most of Richards's recordings with artists other than the Rolling Stones were sessions for Andrew Oldham's Immediate Records label. Notable exceptions were when Richards, along with Mick Jagger and numerous other guests, sang on the Beatles' 1967 TV broadcast of "All You Need Is Love", and when he played bass with John Lennon, Eric Clapton, Mitch Mitchell, Ivry Gitlis, and Yoko Ono as the Dirty Mac for "The Rolling Stones Rock and Roll Circus" TV special filmed in 1968. In the 1970s Richards worked outside the Rolling Stones with Ronnie Wood on several occasions, contributing guitar, piano, and vocals to Wood's first two solo albums and joining him on stage for two July 1974 concerts to promote "I've Got My Own Album to Do".