Ibolyka Astrid Maria Varnay was a Swedish-born American dramatic soprano of Hungarian descent. She spent most of her career in the United States and Germany. She was one of the leading Wagnerian heroic sopranos of her generation.
From Wikipedia (https://en.wikipedia.org/wiki/Astrid_Varnay) under Creative Commons Attribution CC-BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0/legalcode)
Wolfgang Windgassen, Alfons Herwig, Astrid Varnay, Eleanor Steber, Gerhard Stolze, Hans Braun, Hermann Uhde, Josef Greindl, Josef Janko, Richard Wagner, Theo Adam, and Wilhelm Pitz
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Tannhäuser: Act III: O du, mein holder Abendstern (Wolfram)