Exhibition catalogue published in conjunction with show held September 8 - 13, 25 - 29, 1980. Emphasis on audio art, with biographies and artists' commentary. Directed by Hubert Bognermayr, Hannes Leopoldseder, and Ulli A. Rützel. Artists include Klaus Schulze, Adolf Gabriel, Walter Obermühlner, Franz Stütz, Ferdinand Hieslmair, Erich Slavik, Walter Haupt, Otto Piene, and many others. Illustrated in black-and-white and color. In German.