. . . . "Encore Artists" . "chamber music performance" . "1954-12-17T20:30:00"^^ . . . . "Entered from New York Times concert listing and review (\"Opera and Concert Programs,\" Dec. 12, 1954, pg. X8; \"Six Players Excel at Encore Concert,\" Dec. 18, 1954, pg. 13), and from calendar in 12/5/1954 MH program.\r\nWORLD PREMIERE of John Lessard's PARTITA" .