ILL BLU’s Def 1 and Jreel made their name as one of UK funky’s boldest production units—just check the rattling snares and foghorn brass of Princess Nyah’s eternally floor-filling “Frontline”—and they’ve stayed on top by steadily expanding to encompass Afrobeats (ZieZie’s “Fine Girl”), silky electro-house (Sneakbo’s “The Wave”), and brilliant, next-generation rap (Mostack’s “What I Wanna”).