 On the occasion of the complete Mahler cycle performed at the Théâtre du Châtelet in Paris from February to May 1989, he mounted two exhibitions, one at the Châtelet and the other at the Bibliothèque Gustav Mahler, gave 5 lectures, and organized a symposium at the Sorbonne.La Grange acted as advisor for the Mahler cycle given by the Orchestre National de Lyon from 1991 to 1994 and, in 1999, organized an International Symposium about "Irony in Mahler's Music" at the University of Montpellier.In 1998, he spent three weeks in San Francisco as guest lecturer for the San Francisco Symphony's "Mahler Celebration", and he was one of the first European musicologists to lecture about Mahler in Beijing.