Jake Gyllenhaal transformed himself into an overly muscled beast for the role of a boxer in Southpaw, the upcoming film (out July 24) penned by Sons of Anarchy creator Kurt Sutter, directed by Training Day’s Antoine Fuqua. Eminem was previously in talks to star in the film — Sutter has expressed that some of the rapper’s hardships and his relationship with his daughter inspired part of the narrative — but passed it over so he could focus on his music. But Eminim has remained involved with the movie’s soundtrack, which brings us to this odd pairing. Going all aughts, Gwen Stefani joins Slim Shady on the new single “Kings Never Die,” featuring Em’s angry, rapid-fire style with that trademark Stefani wail. “I complain about the game, I shout and I pout, it’s a love-hate/ But I found out that I can move a mountain of doubt/ Even when you bitches are counting me out, and I appear to be down for the count,” he raps. Em also arranged the soundtrack for Southpaw — 14-tracks with Action Bronson, the Notorious B.I.G., The Weeknd, and more. You can watch the video for the first single, “Phenomenal,” over here.