Question: Viennese trichord is named for which group of composers comprising Schoenberg and his pupils?
Sentence (from "Arnold Schoenberg Choir"): The Arnold Schoenberg Choir (German: "Arnold Schoenberg Chor" ) is a Viennese/Austrian choir which was founded 1972 by Erwin Ortner, who is still its artistic director.
Relevant evidence: No