Background and education 
Marie-Claire Alain was born in Saint-Germain-en-Laye on 10 August 1926. Her father Albert Alain (1880–1971) was an organist and composer, as were her brothers, Jehan (1911–1940) and Olivier (1918–1994). She began assisting her father when he played organ in the parish chucrh at the age of 11. She studied at the Paris Conservatory in the organ class of Marcel Dupré, where she was awarded four first prizes. She also studied harmony there with Maurice Duruflé.
She taught at the conservatory of Rueil-Malmaison and the Paris Conservatory. Her pupils included Cherry Rhodes, James M. Higdon, Jr, George C. Baker, Robert Bates, Diane Bish, Guy Bovet, James David Christie, Jesse Eschbach, Monique Gendron, Gerre Hancock, Marcus Huxley, Gunnar Idenstam, Wolfgang Karius, Jon Laukvik, Lyn Hubler Loewi, Michael Matthes, Margaret Phillips, Daniel Roth, Claire Rozier, Wolfgang Rübsam, Helga Schauerte, Dong-ill Shin, Martin Souter, Norma Stevlingson, Martin Strohhäcker], Thomas Trotter, Kenneth Weir, Fritz Werner and Zsuzsa Elekes. Upon her death, the list of her students was described as a "who's who of the present-day organ world".
She was the most-recorded organist in the world, with over 260 recordings in her catalogue. Alain recorded the complete organ works of J.S. Bach three times as well as the complete organ works of over a dozen other major composers of works for the organ, as well as many individual works. She was devoted to the organ works of her brother Jehan, who died before she began her conservatory studies. A recording of works for organ and trumpet with Maurice André was among her most popular. When her third recording of Bach's works for organ appeared in 1994, she explained to The Organ, a British journal, why she was recording them again:
It's because of the instruments, the instruments above everything else, and the fine state to which they have been restored—and the fact that they are now accessible. These recordings use instruments from Bach's time, and we know that Bach even played some of them—it's an extraordinary feeling, to put your hands on the keyboard, knowing that he was there 250 years before you!
Alain had a long association with the St Albans International Organ Festival.
She succeeded her father as organist of the parish church of Saint-Germain-en-Laye after his death in 1971 and served for 40 years.
- Whitney, Craig R. (March 4, 2013). "Marie-Claire Alain, Master of the Organ, Dies at 86". New York Times. Retrieved March 4, 2013.
- Randel, Don Michael, ed. (1996). "Alain, Marie-Claire". The Harvard Biographical Dictionary of Music. Cambridge, Mass.: Belknap Press of Harvard Univ. Press. pp. 9–10. ISBN 0-674-37299-9.
- "Marie Claire-Alain (Organ)". Bach Cantatas. Retrieved March 4, 2013.
- "Laureates". Concours De Geneve International Musical Competition. Retrieved 12 December 2011.
- Helga Schauerte
- Martin Strohhäcker
- Interview, The Organ
- Interview Organ Month Haarlem, 1988
- Obituary, Orgel Nieuws, 26 February 2013
- Obituary, Diapason, 27 February 2013
- Pipedreams Documentary Part I, 12 February 2001
- Pipedreams Documentary Part II, 25 February 2002