Le Dizès collaborated with composers such as Pierre Boulez and György Ligeti, and commissioned new chamber music works.

[4][5] She moved to the United States for two years because of her husband's career, where she became the first woman and the first foreigner to enter the Carnegie Hall Competition.

Afterwards, she regained her technique by going over Bach's sonatas and partitas for violin solo, chamber music works, and concertos.

[3] Le Dizès became a violinist with the Ensemble intercontemporain in Paris in 1979,[6] after which she held the post for more than twenty years.

[3][4] She recorded works by Olivier Messiaen, Iannis Xenakis, Luciano Berio, Elliott Carter, and others.