sentences:  He was denied an academy teaching position in East Germany in 1952, however, on grounds that he had been a leading Nazi in Austria during World War II.Wührer's students included composers Sorrel Hays, Helmut Bieler, and Richard Wilson; pianists Geoffrey Parsons, Frieda Valenzi, and Felicitas Karrer (who described him as having an unusually well-balanced left hand); and harpsichordist Hedwig Bilgram.Among Wührer's editorial activities, he wrote "Masterpieces of Piano Music" (Wilhelmshaven, 1966); compiled a collection of works by old masters; and prepared editions of the Chopin "Etudes", polonaises by Wilhelm Friedemann Bach, and the piano music of Franz Schmidt.