Hildegard Rütgers 1963. Between 1963 and 1965 she performed at the Salzburg Festival, the part of "Die Vertraute" (Her confidante) in a production of "Elektra" by Richard Strauss, conducted by Herbert von Karajan, alongside Astrid Varnay in the title role, and Martha Mödl, Hildegard Hillebrecht, James King and Eberhard Waechter in leading parts. The production of Mozart's "Die Zauberflöte" at the Salzburg Festival, with Rütgers as the Third Boy, was filmed and released as a made-for-television-movie in 1964. She appeared alongside Walter Kreppel as Sarastro, Roberta Peters as the Queen of the Night, Pilar Lorengar and Waldemar Kmentt as Pamina and Tamino,
Mozart, l'opéra rock project marked "a veritable evolution in the grand musicals of the last few years: the songs are better written, less formulaic and syrupy, a better-constructed narrative leaving more room for acting and choreography which is less invasive and systematic." NRJ Music Awards 2010 : Mozart, l'opéra rock Mozart, l'opéra rock ("Mozart, the rock opera") is a French musical with music by Dove Attia, Jean-Pierre Pilot, Olivier Schultheis, William Rousseau, Nicolas Luciani, Rodrigue Janois and François Castello, lyrics by Vincent Baguian and Patrice Guirao and a book by Attia and François Chouquet. The show is a dramatization of the life of