In no man's land of unexplored sounds to Tangerine Dream moved with their fourth album on. The most striking and herrausragendste piece is "Fauni Gena": Here the Tangs merge paradisiacal nature sounds such as birdsong sensitive Mellotron- flutes, sound and music same it more and more each and are hard to keep still apart. In "Circulation Of Events", the listener is forced through a bizarre rollercoaster of harmonies and discords, while the title track from the percussive Radau- Intro to organ cluster has everything got lost the Pink Floyd fan to avantgardtischen "Ummagumma". The Urschreie with "delusions" are a pretty variation on Pink Floyd's "Pow R. Toc H.". For all people who love fascinating ghostly excursions through uninhabited worlds of sound!