Originally released in 1981 as a 12", Stahlwerksynfonie is an industrial masterpiece that marked the beginning of an era. It was recorded in 1981, but several live and alternate recordings never saw the light of day until 30 years later when they were released as part of a Die Krupps CD reissue series. To this day, Stahlwerksynfonie and the early live material has never received a vinyl reissue.