Gall, Yvonne (6 March 1885, Paris; 1972, Paris), vocalist, studied at the Conservatoire in Paris and made her debut at the Opéra as a soprano in the part of Mathilde in Guillaume Tell on 29 January 1908. She had studied under Auguste-Jean Dubulle at the Conservatoire since 1904, and she distinguished herself immediately by her performances as Marguerite in Faust, Aricie in Hippolyte et Aricie , and Gilda in Rigoletto before the end of her first year at the Garnier Palace. In 1909, she was…