St. Louis-raised, Atlanta-based producer Metro Boomin is the master of a street-oriented sound that is jet-black and low-gloss, sufficiently reflected in his alias. Within five years of his first output with Future, he amassed well over a dozen Top 20 R&B/hip-hop hits and a similar quantity of gold and platinum RIAA certifications. Since his early half-decade roll of success working with the likes of Future, iLoveMakonnen, Drake, Migos, and Post Malone -- with "Honest," "Tuesday," "Jumpman," "Bad and Boujee," and "Congratulations" among his biggest hits -- Metro has remained a...