Eric Clapton, Jack Bruce and Ginger Baker came together as classic rock godheads Cream in the late ‘60s, forming the prototypical power trio and launching themselves into the vanguard of psychedelia and blues rock. Clapton became one of the first real guitar heroes, leaping from the blistering blues of “Crossroads” to the mind-melting, wah-wah-soaked acid wash of “Tales of Brave Ulysses” and the chiming, mysterious textures of “Badge” in a single bound. But make no mistake: Baker's polyrhythmic barrage and Bruce's soaring vocals and muscular bass matched him step for step.