A classic album from the Upsetter himself, the incomparable Lee ‘Scratch’ Perry. Widely considered the first full-length dub LP, “Blackboard Jungle Dub” pairs Perry with another Jamaican legend-engineer King Tubby–and embodies the Upsetter’s loose, instinctive sonic approach, with instrumentals stripped down to the bare elements and then brilliantly reassembled as only he can do.