バイロイト祝祭劇場
He became one of Wagner's most trusted singers, and sang the role of Hans Sachs in the world premiere of his "Die Meistersinger von Nürnberg" (National Theatre Munich, 1868). Betz sang the role more than a hundred times and was closely identified with the character. He also sang Wotan in "Das Rheingold" and "Die Walküre" and The Wanderer in "Siegfried" for the first complete performance of "Der Ring des Nibelungen" (Bayreuth Festspielhaus, 1876). In May 1872, he was one of the four soloists in the performance of "Beethoven's Ninth Symphony" to mark the laying of the foundation stone for the Bayreuth Festspielhaus.