The infectious and even subversive sounds of these early recordings from Lee Perry's Upsetters make any dance floor irresistible. These stylish tracks document the shift from uptempo ska to cooler rocksteady, while introducing early hints of Perry's awesomely weird and experimental edge. The crazy organ solo on "Touch of Fire," spy-movie cool of "Man from MI5," and red-hot saxophone on "Ten to Twelve" remain positively thrilling, while the swampy, organ-driven funk of "Night Doctor" and oddball percussion accents of "One Punch" add a dubwise edge.