Debut 1908 (Rome, part of Micaela). In 1911 Spanish. at La Scala the part of Octavian in Italian. premiere of The Rosenkavalier. In 1910, she sang the part of Manon Lescaut in Paris with great success (Caruso was her partner in these performances). From 1912 she performed at the Metropolitan Opera (debut as Manon Lescaut), after a break caused by illness (1915-19), she returned to the stage of the Metropolitan Opera, where she sang until 1936. Among the best parts of Mimi, Norina in op. “Don Pasquale”, Violetta, Louise in one. op. G. Charpentier. In 1922 Bori performed in the title role in Op. “Snow Maiden”.