 She performed the role of Blanchefleur in a concert performance of Kienzl's "Der Kuhreigen", and was Lucy in Weill's "Die Dreigroschenoper".Felbermayer also sang regularly at La Scala, La Monnaie, Liceu, the Graz Opera, and at the Salzburg Festival, where she appeared from 1952 almost every year.She appeared in concert and on radio in Vienna, and in Germany and Italy.