Mammut was a unique collaboration between two German jazz bands from the Stuttgart jazz scene, namely The Rope Set and Those. It consisted of the two brothers, guitarists and singers Klaus and Peter Schnur, Rainer Hoffmann on piano and organ, bassist and flautist Tilo Hermann and drummer Günter Seier. This new band project, however, lasted only two weeks, much like the group Tyll: an ad hoc line-up was assembled and given complete artistic freedom. These fourteen days, from 1 to 15 August 1970, were exactly the time required for the studio recordings to produce their only album. These took place over several sessions, mostly at night, at the MPS Studio in Villingen.

The eight tracks, all of which feature „Mammut“ in their titles, are linked by various sound effects. This gives the entire album a continuous flow, despite the musical diversity and varied instrumental arrangements, which range from lyrical, symphonic passages through jazz-tinged interludes to wild psychedelic hard rock. This unconventional and powerful work, infused with 1960s psychedelic rock and playful progressive elements, was released in 1971 on the little-known local label Mouse Trick Track Music, which had been founded by the jazz-focused label MPS specifically for rock-oriented releases. It quickly became a legendary rarity. Not least because of its particularly successful production, the self-titled LP is regarded as a masterpiece and a milestone in German progressive rock of the early 1970s. Today, the original German vinyl is one of the most expensive records on the international collectors’ market.