Kirsten Målfrid Flagstad (12 July 1895 – 7 December 1962) was a Norwegian opera singer, and a highly regarded Wagnerian (dramatic) soprano of the 20th century. A restrained and expressive stage performer, she was admired internationally for her voice's sheer tonal beauty, power, stamina, security and consistency of line and tone.
Flagstad was born in Hamar to a musical family; her father was conductor Michael Flagstad and her mother was pianist Marie Flagstad Johnsrud.

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