Trivia

Her career really started in high gear in 1930 when her uncanny ability to sing those stratospheric high notes, including C7 (C above high C).

Richard Strauss later wrote a new cadenza for her high voice, for her to sing as Zerbinetta in Ariadne auf Naxos.

She died in a Mainz clinic on 2 March 1972 following an operation for cancer.

Throughout her career Sack recorded profusely, first on acetate, then, starting about 1935, on the new German invention - the AEG Magnetophon. Recording on tape proved to be infinitely superior to disc and very considerable quantities of those recordings were later transferred to long-playing records (LPs).

In the prime of her career came the film business and offered her roles in movies like "Blumen aus Nizza" (1936) and "Nanon" (1938).

Her voice training took real form when she met Hermann Sack, her mentor and husband from 1921.

During the war, her Jewish husband was imprisoned in a concentration camp.

She went on a five-year tour through South America, South Africa and Canada in 1947.

Her voice already attracted attention at school and in the church choir.

She often sang at the Dresdner Staatsoper in 1934 where she met the conductor Karl Böhm and the composer Richard Strauss for whose premiere of "Die schweigsame Frau" she impersonated the role of Isotta.

After World War II, Sack toured extensively and was particularly successful in Latin America, especially Argentina, Uruguay, Chile, and Brazil (with the result that she and her husband took Brazilian citizenship).

In the 30s she went on tour and sang in Austria, France and at the Covent Garden in England. Other international appearances followed in North Europe and at the Carnegie Hall in the USA where she appeared together with Richard Tauber and Josef Schmidt.

She became a leading soprano singer at the beginning of the 30's and was soon called the "Deutsche Nachtigall - German Nightingale".

She ended her concert career with one final tour of West Germany in the autumn of 1954, a concert at Constitution Hall, Washington, D.C. in 1956 and a brief tour of East Germany in 1957, and then withdrew from public life.

Her career came to a standstill during wartime, her sphere of activity was limited to Germany and the allied countries.