When he was a kid, Sideshow wasn’t particularly interested in music. He and his friends would scatter across the Arat Kilo section of Addis Ababa, happily unsupervised, playing marbles and riding bikes; the songs he heard, many of them mezmur numbers intended for the church or pop standards about stuffy romantic ideals, seemed decidedly for adults. “They’re singing about God and they’re singing about love,” the 28-year-old rapper, born HaileMariam Kassa, says from his Virginia home, “and I