Ruth Siewert (also Rut, Sievert-Schnaudt, Sievert; 1915 – July 2002)[1] was a German contralto and voice teacher.
She performed roles by Richard Wagner at major opera houses in Europe and at the Bayreuth Festival, and was known as a singer of oratorio and Lied.
Born Ruth Schnaudt in Viersen, she studied voice at the Folkwangschule in Essen with her aunt, Anna Erler-Schnaudt.
[2] She performed Wagner roles also in Paris, Bordeaux, Nancy, Nizza and Toulouse, at La Monnaie in Brussels (Erda)[4] and the Liceu in Barcelona.
[2] She took part in a 1961 recording of Beethoven's symphonies with the Royal Philharmonic Orchestra, conducted by René Leibowitz, performing the alto solo in the Ninth alongside Inge Borkh, Richard Lewis and Ludwig Weber.