This piece is part of the program Auf dem Weg zu einer neuen Klangkunst and was transmitted on the 3^rd of March 1966 by the GDR’s radio station Deutschlandsender. The discussion is between Gerhard Steinke and Gerhard Schwalbe. This episode is dedicated to Studio Gravesano, founded in Switzerland in 1954 by Hermann Scherchen with the support of UNESCO. The program focuses primarily on the specific techniques developed by Hermann Scherchen in the studio, techniques deeply influenced by his past as a radio composer, having started his career in the Haus des Rundfunks designed by Hans Poelzig in the 1930s. The program portrays an interesting correlation between the mechanical space of radio recording and the space of electroacoustic technologies explored by Scherchen.