Question: John Fonville has premiered works by composers including Ben Johnston, called, "one of the best non-famous composers this country has to offer" in 1990, by what American critic?
Sentence (from "John Fonville"): He is the author of "Microtonal Fingerings for Flute" (1987), "A Pedagogical Approach to the Flute Etudes of Joachim Andersen" (1981), and "Ben Johnston's Extended Just Intonation- A Guide for Interpreters" (1991).
Relevant evidence: No