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Zayn Malik, Chris Brown

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Zayn Malik's music has taken an even raunchier turn...

On Saturday at midnight, Chris Brown released "F--k You Back to Sleep," a remix of a 2015 single and one of his most explicit songs, featuring the former One Direction star and Usher. This marks the first collaboration as a solo artist for Malik, who left the boy band last March and recently released his debut single, the sensual "Pillowtalk."

The remix of "F--k You Back to Sleep" also mentions the name of the rapper's ex-girlfriend Karrueche Tran.

Brown had released the original version of the song, also titled 'Back to Sleep" and "Sex You Back to Sleep," last November. The track is featured on his seventh studio album, Royalty, which is named after his daughter.

Brown posted on his Instagram page earlier this week a selfie video teasing the remix.

Malik released "Pillowtalk" last month and it reached No. 1 on the Billboard Hot 100 Singles Chart. Its music video shows the singer making out with girlfriend and model Gigi Hadid.

His new album, Mind of Mine, is due to be released on March 25. Malik recently performed a new track from the record, "It's You," on The Tonight Show.

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