For a while, it seemed Justin Bieber would be lost to the waste-bin of childhood stardom and the growing pains that come with oversized fame. Fortunately for both himself and his audience, he has rebounded in a remarkable way. Following up his successful collaboration with Skrillex and Diplo, "Where are You Know" (which he cowrote), he has released "What Do You Mean." The light dance tune mixes the sensitivity of "Where are You Know" with a crisp exuberance not far removed from Clean Bandit's "Rather Be." Even considering his past successes, Bieber has never sounded so relevant and artistically on-point.