 By the 1950s, however, he was being hailed as the top Wagnerian bass-baritone in the world.His Wotan was especially praised by critics for its musicianship.Other major Wagnerian baritones have included Hotter's predecessors Leopold Demuth, Anton van Rooy, Hermann Weil, Clarence Whitehill, Friedrich Schorr, Rudolf Bockelmann and Hans Hermann Nissen.