Ottilie Metzger-Lattermann also formerly Ottilie Metzger-Froitzheim (15 July 1878 – February 1943) was a German contralto who was a famous performer of works by Wagner during the 1910s, and who after her retirement was murdered in Auschwitz.
Joseph Schmidt (4 March 1904 – 16 November 1942) was an Austro-Hungarian and Romanian Jewish tenor.
Mario Ancona (28 February 1860 – 23 February 1931), was a leading Italian baritone and master of bel canto singing. He appeared at some of the most important opera houses in Europe and America during what is commonly referred to as the "Golden Age of Opera".