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 also mentions the name of the rapper's ex-girlfriend Karrueche Tran.