"The Moon Song" is a song from the 2013 feature film Her, with music composed by Karen Orzolek (Karen O) and lyrics by Orzolek and Spike Jonze. Performed by O during the film's end credits, the song was also performed by the film's main characters, Samantha (Scarlett Johansson) and Theodore (Joaquin Phoenix). A digital single containing all three versions of the song was released on February 11, 2014, by WaterTower Music.