Rooney is the primary musical project of singer-songwriter Robert Schwartzman, evolving from its origin as an American rock band formed by high school friends in Los Angeles. Before Schwartzman decided to continue with the project and take it in a different direction, the band's most enduring line-up consisted of Schwartzman, Louie Stephens, Taylor Locke, Matthew Winter and Ned Brower. The band is named after Ed Rooney, the principal in Ferris Bueller's Day Off portrayed by actor Jeffrey Jones.

The use of music on FOX drama The O.C. gained much acclaim. Show creator Josh Schwartz wanted music to be a "character on the show" and the experienced Alexandra Patsavas took the role of music supervisor. The show's orchestral music was composed by Christopher Tyng. The series is credited with showcasing many artists, and helping to elevate them in the music business. Many acts made guest appearances on the show, and others premiered their new singles in episodes. Six official soundtrack albums were released, and these were compilations of predominantly indie music.