When Nigerian singer Rema emerged with one of the best Afrobeats songs of the late 2010s, “Dumebi,” he was a teenager and he sounded like it. He looked like it in the video, too, a sunny hang with other fashionable teens in the kind of bright casuals you could snag from Forever 21. His nasal trills exuded youthful innocence, even though he was coming on to some young woman by calling his dick a banana in Yoruba. His voice had barely dropped when the original version of “Calm Down” was released about three years later. It then…
