The Orb have made a career of finding the psychedelic, nougaty center of almost any track they make or collaborate on. The duo wrap a trippy throb around Primal Scream's strung-out “Higher Than the Sun” and playfully shoot Maurizio's austere dub techno to outer space on “Ploy.” “Slug Dub” takes a children's book far afield. A collaboration with David Gilmour matches Pink Floyd spaciness on the epic “Metallic Side.”