It was in this field that she would become famous. She taught at the conservatory in Cologne and, in the 1870s at the Vienna Conservatory, where she tutored Marie Fillunger among others. In 1881 she opened her own school on the in Paris, where she was to remain for most of her life. Ultimately, she was best known as the vocal teacher of a number of great singers. The most famous among them is perhaps Nellie Melba, but she also trained such illustrious singers as Emma Calvé, Frances Alda, Ellen Gulbranson, Selma Kurz and Emma Eames. Marchesi died in London in 1913. The mother of Joan Sutherland was taught by a pupil of Marchesi.