Question: Cosmé McMoon (born Cosmé McMunn; February 22, 1901 – August 22, 1980) was a Mexican-American pianist and composer, best known as the accompanist to notably tone-deaf soprano Florence Foster Jenkins, (born July 19, 1868 – November 26, 1944) was an American socialite and amateur soprano who was known and mocked for her flamboyant performance costumes and notably poor singing ability, Jenkins's full given name?
Sentence (from "Florence Foster Jenkins"): "No one, before or since," he wrote, "has succeeded in liberating themselves quite so completely from the shackles of musical notation."
Relevant evidence: No