Question: What is the name of this French composer, conductor, writer, and organiser of institutions, who collaborated with Gunter Reich to interpret the works of Arnold Schoenberg?
Sentence (from "Leonard Stein"): Leonard David Stein (December 1, 1916 – June 23 or 25, 2004) was a musicologist, pianist, conductor, university teacher, and influential in promoting contemporary music on the American West Coast.
Relevant evidence: No