Her discography features complete recordings of Die Zauberflöte (as the Queen of Night, conducted by Sir Thomas Beecham, 1937–38, for EMI), and Rigoletto, with Jan Peerce and Leonard Warren, conducted by Renato Cellini (1950) which was the first complete opera recording (with a few minor cuts) made in the United States by RCA Victor for commercial release on the then-new LP format.
[1] Berger appeared at the Metropolitan Opera during the 1949/50 and 1950/51 seasons, in Der Rosenkavalier (opposite Eleanor Steber and Risë Stevens, conducted by Fritz Reiner and directed by Herbert Graf), Rigoletto (with Warren, then Enzo Mascherini), Die Zauberflöte, and Il barbiere di Siviglia (with Giuseppe Valdengo).
She also sang Woglinde and the Waldvogel in Der Ring des Nibelungen, with Kirsten Flagstad and Helen Traubel alternating as Brünnhilde.
She sang the role of Zerlina in the 1954 Salzburg Festival production of Don Giovanni conducted by Wilhelm Furtwängler, filmed by Paul Czinner and released on DVD by Deutsche Grammophon.
[2] In 1980, to celebrate her eightieth birthday, she "spontaneously sang over live German television Schubert's 'Im Abendroth' with moving devotion and a fine, warm quality.