Photo of Eminem by Steve C. Mitchell/AP; Gwen Stefani by Theo Wargo

Eminem's latest contribution to the Southpaw soundtrack has made its way online.

"Kings Never Die," a rock-rap collaboration with Gwen Stefani, starts off with a simmer but about midway through, the gritty track kicks into high gear.

As we previously mentioned, the soundtrack and the film—which stars Jake Gyllenhaal, Forest Whitaker and Rachel McAdams—are both out on July 24.

Listen to "Kings Never Die" below.