an Entity references as follows:
Marcel Wittrisch (1 October 1901 – 3 June 1955) was a popular German operatic tenor. Wittrisch was born in Antwerp, Belgium to a German family, and subsequently studied in Munich, Leipzig, and Milan. His career began in Halle, Saxony-Anhalt in 1925 in a production of Hans Heiling by Marschner at the Halle Opera House. He then went to Brunswick and on to Berlin, where he sang opera from 1929 to 1944. Wittrisch also appeared as Eisenstein in Die Fledermaus at the Royal Opera House, London in 1931.