Polish harpsichordist, pianist, composer and musicologist.

He was born on July 5 of 1879 in Warsaw (Poland). She began playing the piano at the age of four. She started her musical education with Jan Kleczyński. She was admitted into the Conservatory of Warsaw and received piano lessons from Aleksander Michałowski, with whom she prepared works by Chopin, Schumann, Beethoven, and Bach. In 1896, in Berlin, she studied composition with Heinrich Urban.

She married the folklorist Henry Lew in 1900. In Paris she gave concerts as a harpsichordist at the Schola Cantorum; starting off in the French capital she toured the rest of Europe. In 1909 she published her book "Musique ancienne: le mépris pour les anciens, la force de la sonorité, le style, l'interprétation, les virtuoses, les mécènes et la musique" and, three years later, she premiered played a Pleyel harpsichord for the first time at the Breslau Bach Festival, built under her guidelines. During this time in Paris she also gave private lessons, one of her students being the Valencian pianist José Irtubi, whom she did not charge for his weekly lessons. Between 1913 and 1919, she taught at the Hochschule für Musik in Berlin. After the accidental death of her husband in 1919, she taught acting classes in Basel and Barcelona; and in the years 1921 and 1922 she taught courses at the École Normale de Musique in Paris. During this decade, she gave concerts around the world as a harpsichordist; worth noting among her concerts were her two recitals at the Hotel Alhambra Palace in Granada and at the Nasrid Palace itself in November of 1922, where she performed works by Bach, Scarlatti, Purcell, or Händel with the assistance of Manuel de Falla and a large group of fans, artists and, intellectuals from Granada, among whom was Federico García Lorca. She was part of the Parisian premiere of "El retablo de maese Pedro" by Falla on June 25 of 1923. The Cádiz-born artist dedicated "Concerto per clavicembalo (o pianoforte), flauto, oboe, clarineto, violino e violoncello" (1923-1926) to her, a work premiered on November 5 of 1926 at the Palau de la Música in Barcelona ​​by an instrumental group of teachers from the Pau Casals Orchestra; and under the direction of Falla and Landowska as soloist.

In 1926, in the French town of Saint-Leu-la-Forêt, she founded her École de Musique Ancienne, specializing in the recovery of works by composers from the Baroque period; the fame of this centre attracted students from different countries, such as the violinist from Motril Manuel Pérez Díaz and the Valencian pianist Amparo Garrigués Cotanda, who received a scholarship from the Board for Extension of Studies (JAE); and harpsichordists such as the Italian Ruggero Gerlin, or the American Ralph Kirkpatrick. On May 3 of 1929, she premiered "Concert champêtre" for harpsichord and orchestra by Francis Poulenc, a work that was dedicated to her.

During World War II, on June 10 of 1940, she was forced to leave Saint-Leu-la-Forêt before the advance of the Nazis who looted her library, archive, and instruments collection; she took refuge in the Pyrénées-Orientales region for eighteen months. Her last concerts in Europe took place in Lausanne and Geneva in November of 1941. She travelled to the United States in 1942 and gave concerts and master classes throughout the country. Her connection to Polish music led her to include Chopin's mazurkas in her repertoire, in addition to dedicating an album in tribute to the composer and pianist Ignacy Jan Paderewski in 1951. She died on August 16 of 1959 in Lakeville (United States).