Charles Alfred Leavell (born April 28, 1952) is an American musician. A member of The Allman Brothers Band throughout their commercial zenith in the 1970s, he subsequently became a founding member of the jazz rock ensemble Sea Level. He has served as the principal touring keyboardist and de facto musical director of The Rolling Stones since 1982. As a session musician, Leavell has performed on every Rolling Stones studio album released during his tenure with the exception of Bridges to Babylon (1997). He has also toured and recorded with Eric Clapton, George Harrison, David Gilmour, Gov't Mule and John Mayer. Dr John