Natalia Karp plays Chopin’s Nocturne in C-sharp minor

From Wikipedia:
In 1943, after the death of her husband in a bomb raid, Karp was sent to the Kraków-Płaszów concentration camp where she came into contact with Amon Göth (a man who had personally shot 30-90 women and children during the liquidation of the Tarnów ghetto). On his birthday, Göth ordered her to play for him and was impressed enough with her performance to spare not only her life but that of her sister as well. She chose to play Chopin’s Nocturne in C-sharp minor, and would in later years be known for her interpretations of his pieces. Eventually, she and her sister were sent to Auschwitz, but both survived the war.