Sunil Heera’s air-light mix of R&B, dance and electronic sounds has the energy to get bodies moving on Saturday night, but is also gentle enough to soothe Sunday morning’s comedown. As XO, the producer serves up a cool, genre-bending style that shines on debut mixtape Those Who Wander—witness the way the funky bassline of “Divine Disaster” pings playfully about. “Waiting Game”, meanwhile, combines sci-fi synth loops with snappy vocals that sound like a futuristic update to Michael Jackson and Stevie B's ‘80s swagger.