Exhibition catalogue published in conjunction with show held in 1989. Essay by Christel Schüppenhauer. Artists include Stephan Barron, Mieczyslaw Berman, Josef Beuys, Wolfgang Blobel, Monika Brandmeier, George Brecht, Joan Brossa, Vladimir Burda, John Cage, Ugo Carrega, Henry Chopin, Carl Friedrich Claus, Gunter Demnig, Klaus P. Dencker, Marcel Duchamp, Jean Dupuy, Fria Elfen, Henry Flynt, Rainer Ganahl, Heinz Gappmayr, Michael Grobmann, Wolfgang Hainke, Al Hansen and Raoul Hausmann. Includes short biographies for each artist. Texts in German.