"Back to Sleep", also known by the censored version title "Sex You Back to Sleep", is a song by American recording artist Chris Brown from his seventh studio album Royalty. The song was released as the album's third single and its first urban single on November 5, 2015.

The song received mixed reviews from contemporary music critics, some noted it as one of the album's highlights celebrating its production, and others criticized its lyrical content. Critics compared the song to Brown's previous singles "Take You Down" (2008) and "No Bullshit" (2011), and also to Marvin Gaye's 1982 song "Sexual Healing". The song became its most successful from the album, by peaking at number 20 on the US Billboard Hot 100, and number 5 on the US Hot R&B/Hip-Hop Songs chart.

The song was written by Chris Brown, Anderson Hernandez, Matthew Samuels, Allen Ritter, and August Rigo, and was produced by Vinylz, Boi-1da and Allen Ritter. Premiered and was sent to radio as the album's third single and its first urban single on November 5, 2015, receiving its commercial release for digital download on November 9, 2015.

"Back to Sleep" is an R&B, mid-tempo slow jam that features beats and minor influences of funk and pop music, reminiscent of Marvin Gaye's 1982 song "Sexual Healing". The production of the song infuses elements of new school R&B with elements of '80s pop, and is a based on a roland TR-808.

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