She made her debut in 1943 at the Theater Saarbrücken as Blonde in Mozart's Die Entführung aus dem Serail.
That same year, she performed Zerbinetta in Ariadne auf Naxos by Richard Strauss there, repeated in 1954.
[2] In 1956, Hollweg recorded Mozart's Entführung with Sir Thomas Beecham conducting the Royal Philharmonic Orchestra, alongside Lois Marshall as Konstanze, Léopold Simoneau as Belmonte, Gerhard Unger as Pedrillo and Gottlob Frick as Osmin.
On the other end of the emotional scale lies her Act 2 'Welche Wonne', negotiated with enviable ease by Hollweg.
"[3] She recorded in 1965 Luigi Nono's Il canto sospeso with the Royal Concertgebouw Orchestra, conducted by Pierre Boulez.