 In 1969 she joined Graz Opera, singing there for three seasons in such roles as Leonore in Beethoven's "Fidelio" and the title roles in Richard Strauss's "Salome" and Puccini's "Tosca".From 1972-73 she sang with the Oper der Stadt Köln and at the Opernhaus Zürich.The year 1974 proved to be a milestone in Knie's career.