The six-disc Cellar Door Sessions collects more than five hours of a live 1970 jam session by an incredible edition of Miles' band, most notably electric keyboardist Keith Jarrett, protean monster drummer Jack DeJohnette, and Brit electric guitarist John McLaughlin. Though only a fraction of this material was available previously (on the Live/Evil album), all of it deserves deification. From the churning, kaleidoscopic insistence of "Inamorata" on disc six, it's astonishing to realize that it was mostly improvised; as spastic polyrhythms mesh, Gary Bartz' sinuous saxes soar from dissonance to serenity, Jarrett's notes glisten, and Miles' searing, vocalized tone speaks in tongues. If not for Miles, the Orb, Bill Laswell, Massive Attack, and the Ninja Tune posse might not be.