In the early 2010s, Darrel Jackson was given his moniker, Chopsquad DJ, by the godfather of drill himself: Chief Keef. Since then, the St. Louis–born producer has become one of the genre’s most important beat architects, known for mixing punishing 808s with soulful keyboard licks. He has appeared on nearly every Lil Durk project, assisting in the rapper’s 2020s commercial resurgence (“What Happened to Virgil”) and struck chart gold with Trippie Redd on the breezy “Topanga.” He has also contributed to projects by elders like T.I. and Kanye.