Limbus 4 has been played on NTS in shows including Geologist Presents: The O'Brien System, featured first on 19 April 2020. Songs played include Kundalini and Dhyana.

Limbus 4 was created in 1970 when Limbus 3 added Matthias Kniepper, thus forming, a quartet and went to record the puzzling Mandalas lp, a further step in their cosmic ethnic improvisations, this time making use of a more varied instrumental palette and taking advantage of the possibilities of the recording studio. A unique album that ranks amongst the most adventurous ever released by Ohr and which, to make things even better, spots another of those cool…