The electroacoustic works by Erhard Grosskopf offer a grand insight into the pioneering days of the large electronics studios. Grosskopf was able to experiment with state-of-the-art analogue technology at the Instituut voor Sonologie at the Rijksuniversiteit Utrecht; this is how Dialectics, among others, was created for the EXPO’70 in Osaka.

In addition to the purely electronic version as it was heard in the German pavilion at the time, a performance with three live instrumentalists and tape is documented here (Eberhard Blum, flute; Hans Deinzer, clarinet; Vinko Globokar, trombone; Erhard Grosskopf, sound control).

Prozess der Veränderung (Process of Change) and Night Tracks also originated in Utrecht in the early 1970s, where Grosskopf was a research assistant for a few months in order to be able to realize the compositions.

The analogue tapes were digitized for this publication by the Institute of Sonology, which is now based in The Hague.