Guru Guru played in the Wartburg, a Wiesbaden hall, on September 17th, 1973. It was one of the gigs recorded by Xhol (Caravan) acquaintance Muck Krieger. His recording equipment was then state-of-the-art: an Uher tape recorder CR 124 and two Revox microphones for the stereo sound, the equipment he had used the year before (CD 'Wiesbaden 1972'). The result has turned out satisfactory, although the occasional singing sounds slightly thready and reverberant. That is partly due, however, to the live sound reproduction during the gig. With its 37 minutes, 'Ooga Booga' leaves a lot of space for free improvisation. 'Round Dance' and ;Das Zwickmaschinchen' are from their fifth LP, 'Don't Call Us', which had just been recorded at that time. Thus, Muck Krieger's supply of Guru Guru material has been exhausted.