"XO" is a power ballad recorded by American singer Beyoncé from her self-titled fifth studio album in 2013. Columbia Records released the song as the lead contemporary hit radio single from the album in the US and Italy on December 16, 2013. Ryan Tedder self-wrote, composed and co-produced "XO" with Terius "The-Dream" Nash and Beyoncé, with additional production handled by Chauncey "Hit-Boy" Hollis and HazeBanga Music. A pure midtempo Pop love song with electronic influences, "XO" is complete with electronic musical instrumentation, synthesizers and drums. Musically, it was compared to Beyoncé's own song "Halo" and was noted for having several music hooks including its call and response chorus.

Beyoncé is the self-titled fifth studio album by American singer and songwriter Beyoncé. It was released on December 13, 2013, through Parkwood Entertainment and Columbia Records. Developed as a visual album, every song is accompanied by a non-linear short film that illustrates the musical concepts. Beyoncé's desire to assert her full artistic freedom served as inspiration for the album's dark, personal subject matter, which incorporated feminist themes of sex, monogamy, beauty standards and relationship problems.