Entered from booking ledger and New York Times concert listing and review. Besides soprano Barbara Blanchard, cellist Yves Chardon, and pianist Zita Carno, the assisting artists are not identified. WORLD PREMIERE of Ludmila Ulehla's GARGOYLES "Who Makes Music." New York Times (1923-), 12 Apr. 1970, p. 1. ProQuest. Web. 29 July 2025. "MET'S HINDELL GIVES A BASSOON RECITAL." New York Times (1923-), 17 Apr. 1970, p. 39. ProQuest. Web. 29 July 2025.