Stefani will join Em on a song called "Kings Never Die". The Weeknd and Fif, meanwhile, appear on "Wicked Games" and "Drama Never Ends" respectively. Also included on the compilation set are the previously-released "Phenomenal" and tracks recorded by Busta Rhymes, Action Bronson, Joey Bada$$, Notorious B.I.G. and more.
The "Southpaw" soundtrack is coming out on July 24 via Em's Shady Records/Interscope Records. On the same day, the film directed by Antoine Fuqua is hitting U.S. theaters. The movie centers on a boxer (Jake Gyllenhaal) on a downward spiral who's trying to rebuild his career and regain custody of his young daughter after a tragedy.
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