 She went on to perform Isolde in 1952 in an account with Herbert von Karajan and Ramon Vinay that, along with Wilhelm Furtwängler's account of the same year, are considered definitive.A second recording of her Isolde exists from 1959 with Ferdinand Leitner.She joined the Stuttgart Opera, and would reprise the role of Isolde on TV when Leonard Bernstein presented his "What Makes Opera Grand?"