Veteran composer and sound artist David Behrman discusses the relationships between experimental American composer-performers and the West German producers and artists who vigorously supported their work from the 1950s until Reunification. He also traces changes in the views of what new music should be during the course of those four decades, how horizons expanded, and how seminal figures John Cage, Hans Otte, Walter Bachauer, and others broadened the scope of German and American musical life.