Born in Choisy-le-Roi to Jean, an architect father; and Madeleine (née Célerier), a pianist mother, she received initial instruction in piano from her older sister (who received the First Prize in piano in Yves Nat's class).
She was introduced to Marcel Dupré in 1939, and she studied privately with him before winning a first prize for organ and improvisation at the Conservatoire in Paris in 1947.
[3] As soon as she finished her studies, Chaisemartin began a career as a concert performer, which took her all over Europe and the United States.
At the beginning of her career, she served as a substitute organist for Dupré, who often went on concerts around France and the world, at his organ at Saint-Sulpice in Paris After serving as a substitute from 1955 to 1971 for Rolande Falcinelli at the Conservatoire de Paris, she became an assistant professor from until 1986.
Chaisemartin has made numerous recordings devoted mainly to Bach, Mendelssohn, Schumann, Liszt, Brahms, Guilmant, Widor, Gigout, Dupré and Langlais.