Leon Neyfakh is perhaps more like his mom than he’d care to admit. The Slate staff writer and sometimes music critic’s first book, The Next Next Level (released July 7) is a kind of conjoined twin profile-memoir, with the subject—a white rap-rocker from Milwaukee, renowned for his intense live shows, named Juiceboxxx—sharing as much of the word count as the author. The connection is natural. Neyfakh’s known Juice since they were teens, when he was booking the energetic, single-minded MC for a show in a church basement, and, later, sneaking Juice into his house, fearing that his parents wouldn’t approve of his friend.