 Apart from his compositions, Cerha widely earned a reputation as an interpreter of the works of Alban Berg, Arnold Schoenberg and Anton Webern; his affinity for the works of the second Viennese school culminated in the completion of Alban Berg's opera" Lulu" by finishing the instrumentation of the 3rd act and filling the gaps in the score (premiered by Pierre Boulez in Paris, 1979).In April 2006, Friedrich Cerha joined the Joseph Marx Society.With a group of contemporaries such as Kurt Schwertsik and Peter Vujica, he was also involved in the establishment of this society.