If there's another keyboardist in the history of rock & roll with a more stunning, voluminous résumé than Ian McLagan, the name would have to be Billy Preston. But who has the time to make such a tally? As the animating force behind the Faces — Small or otherwise — McLagan worked the Hammond organ and electric and acoustic piano into the ramshackle sound like he alone heard the secrets at the heart of the songs. The Rolling Stones, Bonnie Raitt, Bob Dylan, Buddy Guy and even the Boss, who never lacked for keys, have all called on Mac's gospel feel and R&B stride. Into his career's fifth decade, he leads his own group, the Bump Band, with his craggy voice and pure, clear touch on the ivories he knows so well.