Born in 1943 in Casablanca, Marocco, Marie-Louise Jaquet studied law in Aix-en-Provence and Strasbourg before exclusively devoting her life to organ and musicology. She was awarded diploma in the virtuosity program of the famous Schola Cantorum in Paris in both interpretation and improvisation, where she was a student of Jean Langlais. In 1969, she was named organist of the celebrated Silbermann organ at the Protestant Church of St. John in Mulhouse; in 1979, she became assistant organist of the Cavaillé-Coll organ at the Basilica of Sainte Clotilde, Paris, where she served with her husband, Jean Langlais.
Marie-Louise Langlais has held position as professor of organ and improvisation at the Nationbal Regional Conservatory of Marseille (1974-1987), at the Schola Cantorum (1985-2007) and at the National Regional Conservatory of Paris (1987-2011). In addition, she has served on numerous national and international juries around the world.
In 1992, Marie-Louise Langlais wrote a doctoral thesis in musicology at the  Sorbonne on the life and music of Jean Langlais, wich was later reworked and published as a book under the title “Ombre et Lumière, Jean Langlais (1907-1991)” by editions Combre, Paris. 
In 1999, she was awarded a special prize by the Institute of France for this publication on her late husband’s legacy. In 2009, she wrote a book on the organ works of Jean-Louis Florentz, published by editions Symetrie, Lyon.
A major concert artist, Marie-Louise Langlais has performed throughout North America and Europe since the early 1970s and has recorded for many foreign and French companies (Arion, Festivo, Koch International, Lyrinx, Motette, Solstice).
Because of her extensive musicological research, she is in frequent demand for master classes and lectures. Her many topics include “The Sainte Clotilde Tradition (Franck, Tournemire and Langlais) and the French organ school from the 1930s.
The Oberlin Conservatory of Music, Oberlin, Ohio (USA) invited Marie-Louise Langlais to serve as Distinguished Visiting Professor of Organ for the fall semester of 2012, where she taught organ and improvisation and gave regular master classes. During this time, she also was touring throughout the United Stateson a weekly basis, giving lectures, master classes and concerts.
Official Website of the organist Marie-Louise Langlais