Annexus Quam was a beat band founded in 1967 in Kamp-Lintfort, North Rhine-Westphalia, which, influenced by jazz, transformed itself into an improvisational septet through constant concerts and tours. Nevertheless, far removed from the typical jazz sound, they integrated psychedelic rock, free jazz and avantgarde experiments into a unique cosmic fusion that was completely independent. The members of the seven-piece band were mostly multi-instrumentalists and consisted of Peter Werner (g, voc, perc), Hans Kämper (g, trb, voc, perc), Ove Volquartz (sax), Harald Klemm (fl, voc, perc), Werner Hostermann (cl, org, voc, perc), Jürgen Jonuschies (b, voc, perc) and Uwe Bick (dr, voc, perc). Through a contact with Rolf-Ulrich Kaiser, a demo tape found its way to LSD guru Timothy Leary, who was completely enthusiastic. As a result, they were offered a record deal with Kaiser's Ohr label. Produced by Julius Schittenhelm, their debut album Osmose featured a very personal, progressive fusion of jazz, Krautrock, space and electronic effects, presented through experimental improvisations with fearless disregard for musical norms, in the spirit of uninhibited artistic freedom.

It was released in 1970 in a limited edition of 5,000 copies with one of the most luxurious and elaborate gimmick covers of all time, designed by Gil Funccius, which makes the original German first pressing extremely expensive. Nevertheless, it went largely unnoticed. Two years later, their second and final album was released before the band broke up.