[2] Eva Didur studied voice with William Thorner[3] and Gina Ciaparelli-Viafora.
[11][12] In 1921 she was back in Milan to sing the part of Marguerite in Mefistofele, under the direction of her godfather, Arturo Toscanini.
In 1917 she performed at a concert with pianists Ignacy Jan Paderewski and Zygmunt Stojowski for the Polish Victims War Relief Fund.
[16] In the summer of 1918 she sang the Polish national anthem and other music at a "Polish Night" stadium concert in New York,[17] under the direction of Arnold Volpe,[18] and at a Red Cross benefit concert on Long Island.
[19] As a young woman Eva Didur was close friends with silent film actress Dagmar Godowsky.