(b Berlin, 22 Oct 1907; d Berlin, 28 March 1981). German tenor. He studied in Berlin, where he made his début at the Deutsche Oper in 1936 as the Italian Singer in Der Rosenkavalier. Despite being on the ‘forbidden’ list of non-Aryan musicians (his grandmother was Jewish), he managed to remain a member of the company until 1942, by which time he was singing such parts as Florestan, Pedro (Tiefland), Max and Otello. In 1942 he joined the Staatsoper in Munich, where he was heard chiefly in the Wagner repertory. After the war he returned to Berlin, first to the Staatsoper and then to the Deutsche Oper, where he created La Rocca in H.W. Henze's Der junge Lord (1965). He made regular guest appearances in Vienna. He sang Siegmund at Bayreuth in 1951 and 1952; Siegmund, Florestan and Tristan at the Metropolitan, 1951; and Siegfried at Covent Garden in 1953. His repertory included Adolar (Euryanthe), Tannhäuser and Parsifal. Treptow's dramatic intensity compensated for his occasional lapses in technique. His true Heldentenor voice can be heard in his recordings of Walther (Die Meistersinger) and Tristan, both under Hans Knappertsbusch, and as Siegmund in Wilhelm Furtwängler's live recording of Die Walküre at La Scala.
From The Grove Book of Opera Singers in Oxford Reference.