Jamie X’s ‘In Waves’: Album Review

The challenge in talking about Jamie XX’s brilliant new album “In Waves” is trying to describe what “kind” of music it is. As the main songwriter and producer in the British trio the XX, he was the driving force behind one of the great hopes of alternative music in the late ‘00s. But as that group splintered, he began leaning into his other gig as a DJ and producer, and released…