Who made the beat for “Bad and Boujee”? It should be a simple question. Most rap fans (and media outlets) would answer, without hesitation, Metro Boomin. But that’s not the full story. The songwriting credits list a Robert Mandell, better known as G Koop. And that leads us to a not-very-well-known side of how hip-hop works. Koop is a musician who has worked on tracks for the biggest names in the business. 2 Chainz, Future, Migos, DJ Khaled, 21 Savage, Meek Mill, and more have all relied on his tunes. So why don’t you hear his name everywhere? It’s because Koop is part of a new breed of musicians and composers, many of them managed by the same veteran Shady Records exec, who have quietly played a major part in creating the biggest records of recent years—and now they’re coming for their credit.