Jim Keltner is one of a group of session musicians who achieved near super-stardom at the start of the 1970s, amid the explosion of recording work by the ex-members of the Beatles -- along with Leon Russell, Klaus Voorman, Billy Preston, Jim Gordon, and Bobby Whitlock, to name just a few, his name became closely associated with that first flash of post-Beatles creativity by John Lennon, George Harrison, and Ringo Starr. But he was already one of the busiest drummers working in Los Angeles, and his playing -- even discounting the records by the former Beatles at the time and si...