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In page Erna Spoorenberg:
"In parallel to her opera career, she gave many recitals, often with Géza Frid, and also as a soloist. In a 1957 recording of Bach's St Matthew Passion with De Nederlandse Bachvereniging, conducted by Anthon van der Horst, she was the soprano soloist. On 16 April 1970, she made her final appearance at De Nederlandse Opera as Konstanze in Die Entführung aus dem Serail.[citation needed]
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