Rolande Falcinelli was a student of Marcel Dupre, and succeeded him as organ professor at the Paris Conservatoire. She was a pioneer composer for the organ, searching for new techniques and greater virtuosity. She wrote several hours of organ music, much of it remains unknown.
This is from "Petit Livre de Prières", a set of prayers Falcinelli wrote for the organ. Here is the seventh of 9 Prayers, Au Coeur Sacre de Jésus