The compilations Planeten Sit-In and Sci Fi Party, both originally released in 1974, are a contemporary document of the legendary jam sessions of the Cosmic Jokers. Under a conceptual mantle, the recordings were brought to a young audience. Among the musicians the elite of the krautrockers of that time, like Manuel Göttsching, Klaus Schulze, Jürgen Dollase, and Harald Grosskopf. Plus, Dieter Dierks, who was responsible for the recordings, arrangement, and mixing, but also participated as a musician. Newly transferred from the original analog tapes and carefully remastered for the first time.