(b Basle, 1900; d Zurich, 1986). Swiss music critic and author. Mus. critic of Neue Zürcher Zeitung 1928–65 (mus. ed. from 1944); teacher at Zurich Cons. 1930–44. Ed. Busoni and Wagner letters. Friend of and authority on R. Strauss, who appointed him his official biographer. First vol., Richard Strauss: Jugend und frühe Meisterjahre 1864–98, pubd. Zurich 1976 (Cambridge 1982, trans. Mary Whittall). Also ed. Strauss's Recollections and Reflections (1949), Strauss–Hofmannsthal letters (1952), Strauss's letters to his parents (1954), to Bülow (1954), to Zweig (1957), and to Schuh (1969).
From The Concise Oxford Dictionary of Music in Oxford Reference.