Who would have thought that a member of The xx could be boisterous? Jamie xx's debut solo album leaps into the fray with "Gosh," a throbbing paean to the glory days of pirate radio, and later, we also hear from Atlanta's Young Thug and dancehall crooner Popcaan -- though his bandmates' vocal and instrumental cameos sound more like the trio's typically hushed work. Combining steel pans, shimmering synths, rough-edged breakbeats, and doo-wop samples, In Colour balances carefully between U.K. dance-music tradition and its creator's own melancholy vision. Even its shouts feel like whispers.