[3] The cellist Pablo Casals heard Tagliaferro play in São Paulo when she was eleven, and he encouraged her to study at the Conservatoire de Paris.

[4] She developed a reputation[citation needed] for striving towards the realization of the musical ideals exemplified by Cortot: a perfect union of clarity and tenderness, inner strength and emotion and classical balance in shaping the works being interpreted.

[citation needed] She, in turn, applied herself to performing new works by composers such as Reynaldo Hahn, Jean Rivier, Gabriel Pierné and Heitor Villa-Lobos.

She taught at the Paris Conservatoire from 1937 to 1939, where Polish pianist Władysław Kędra was among her students, invited by her when she heard him play as she judged the III International Chopin Piano Competition in Warsaw, Poland in March, 1937.

Her many students included Pnina Salzman, Jeanne Demessieux, Lycia de Biase Bidart, Flavio Varani, Cristina Ortiz, Maria Teresa Naranjo Ochoa, Jorge Luis Prats, Gayle Sharlene Brown, James Tocco and Caio Pagano.