This is where Miles Davis turned funk into jazz, rock into soul, and chaos into Beauty. With a rotating cast of bands featuring keyboardists Keith Jarrett and Chick Corea, guitarist John McLaughlin, percussionist Airto Moreira, saxophonists Gary Bartz and Wayne Shorter, and myriad other explorers, Davis kept up with the times...and surpassed them. He rocked harder than Sly, got funkier than J.B., and turned jazz inside out, slicing the music open till blood spilled on to the floor. More focused than Bitches Brew, which is all the more surprising since it's actually a piecemeal recording from various dates and venues--some in the studio, some on stage, but all very much l-i-v-e. --Robert Wilonsky