Ann Labounsky, chair of organ and sacred music at Duquesne University in Pittsburgh, studied with Langlais and accompanied him as guide and interpreter during his US tour in 1964.  In addition to asking her to be his biographer, he authorized her to record his complete works for organ. Her definitive biography will be important for those interested in his pivotal style, connecting the traditions of Franck and Tournemire to the 20th century. Amadeus Press, 392 pages.