Proof thought Treach was the best rapper, too. Every time he would drop an album I would just be, like, Son of a b****.” Another artist’s debut also astonished Eminem. “Nas, too. I remember The Source ...

Halfway through its first week of release, Eminem’s Music to Be Murdered By is doing what Eminem albums do best: selling truckloads of copies and making critics question its merit. The rapper ...