On the thumping “Get Em Up,” Mac Miller raps, “I’m Justin Bieber meets Jadakiss,” placing himself in the microscopic center of a Venn diagram between the cherubic pop star and gravel-voiced MC. In ...

The Alchemist on his producer work for Kendrick Lamar, Erykah Badu, Mobb Deep, Freddie Gibbs and more nearly three decades after his breakthrough.