Erna Sack
Erna Dorothea Luise Sack (née Weber, 6 February 1898 – 2 March 1972) was a German coloratura soprano, known as the German Nightingale for her high vocal range.
Erna Dorothea Luise Sack (née Weber, 6 February 1898 – 2 March 1972) was a German coloratura soprano, known as the German Nightingale for her high vocal range.