And it was a very, very fruitful and great relationship between the Stones and The Beatles. It was very, very friendly.

During the Rolling Stones' 1972 tour Richards began singing lead vocals on "Happy" in concert and has since then typically sung one lead vocal progressing to two since 1986. Richards plays acoustic guitar on many Rolling Stones' tracks including "Brown Sugar" and "Angie". Richards prefers teaming with at least one other guitarist and has almost never toured without one.

Keith Richards (born 18 December 1943) is an English musician singer songwriter and founder member of the English rock band the Rolling Stones. Fourteen songs Richards wrote with the Rolling Stones' lead vocalist Mick Jagger are listed among Rolling Stone magazine's "500 Greatest Songs of All Time". Rolling Stone magazine said Richards had created "rock's greatest single body of riffs" ranking him 4th on its list of 100 best guitarists.