One of the most raucous and celebrated artists in dancehall checks in from prison. As spry as any of his best albums, King of the Dancehall continues an evolution Kartel started with 2011’s Kingston Story, blending the simmering sound of Jamaican dancehall with the futuristic kinks of American R&B and club music, making for infectious hybrids like “Fever,” the sinister but playful “Hey Addi,” and the hustler’s anthem “Western Union.”