The final album from Deep Purple Mark II showcases their greatest tricks and riffs. There’s the metallic funk of “Rat Bat Blue,” the fast and riffy hard-rock party starter “Smooth Dancer,” and “Mary Long,” which invokes that classic “Smoke on the Water” one-note grind as Ian Gillan spins a saucy tale. “Super Trouper” rides atop Ritchie Blackmore’s stop-start dynamics and sudden twiddles, while “Woman from Toyko” alternates between autumnal piano interludes and primal, pounding rock.