 Complete the following phrase:  Enid Szánthó 15 March 1907  1997, buried 21 April 1997 was a Hungarian operatic contralto. From 1928, she belonged to the ensemble of the Vienna State Opera and appeared at the Bayreuth Festival from 1930, first as Erda in Der Ring des Nibelungen. She gave guest performances in opera and concert in Florence, London, Berlin, Paris, and New York at the Metropolitan Opera, where she made her debut as Fricka in 1938. Her career was de facto ended later that year when 