Glee: The Music, The Complete Season Four is a compilation album featuring 106 released songs from Season Four of Glee, which was first made available exclusively on iTunes on January 14, 2014 via Twentieth Century Fox Film Corporation. Songs that were not released on the compilation can be found in their respective album’s and EP’s, which include: Britney 2.0, Glee: The Music Presents Glease, Glee: The Music, Season 4, Volume 1, and Glee: The Music, The Christmas Album Volume 3.