Eminem and Gwen Stefani Collaborated on 'Southpaw' Track 'Kings Never Die': Listen

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Eminem performs at the 2014 MTV Movie Awards at Nokia Theatre L.A. Live on April 13, 2014 in Los Angeles, California.

Few would have seen this coming. Eminem and Gwen Stefani have teamed up for "Kings Never Die," a song lifted from the forthcoming film “Southpaw.”

It’s a muscular effort with a classic angry Eminem vibe, where Stefani handles the chorus and Em provides the grunt.

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"Kings Never Die" will feature alongside "Phenomenal" and other cuts on the Shady Records-produced soundtrack for Southpaw, starring Jake Gyllenhaal who plays a boxer looking to rise up again after a tragedy, out July 24.

It's not the most original or unusual pairing. And it's hardly a knockout. But it's absolutely worth a spin.