This compilation compiles everything Black Flag recorded before Henry Rollins became the band's vocalist in 1981. Included are tracks from Nervous Breakdown (1979), Jealous Again (1980), Six Pack (1981) and Louie Louie (1981). Also included are the tracks "Clocked In" and "Machine" which were previously only available on the Cracks In The Sidewalk compilation (1980) and Chunks compilation (1981) respectively.