She began to sing the leading parts in 1942 by singing the part of Agathe in Weber 's Der Freischütz in 1942 , and the next year she made her debut at Vienna State Opera by singing the part of Eva in Wagner 's Die Meistersinger von Nürnberg conducted by Karl Böhm .
She soon began to sing leading parts , and in 1943 she sang the part of Eva in Wagner 's Die Meistersinger von Nürnberg at the Vienna State Opera conducted by Karl Böhm .