. "National Orchestral Association" . . "Although the printed concert program lists John Barnett as conductor, the review published in the New York Times clearly indicates that Leon Barzin led the entire concert.\r\nSchonberg, Harold C. \"Music: Barzin Rejoins His Creation: Orchestral Association Alumni Give Concert Conductor, 70, Displays Mastery of Craft.\" New York Times (1923-), 25 Mar. 1970, p. 37. ProQuest. Web. 24 July 2025." . . . "1970-03-24T20:30:00"^^ . . "symphony orchestra performance" . . . . . . .