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 "Herzgewächse"): The work is also notable for the extreme demands made on the singer which at one point has to ascend to a high F ("pianissimo"), nearly two-and-a-half octaves above middle C.
Relevant evidence: No