Contemporary Chamber Ensemble Entered from booking ledger and New York Times concert listing and review. NEW YORK PREMIERE of Michael Colgrass' LIGHT SPIRIT NEW YORK PREMIERE of George Rochberg's SERENATE D'ESTATE WORLD PREMIERE of Ezra Laderman's NONETTE NEW YORK PREMIERE of William Sydeman's MUSIC FOR FLUTE, VIOLA, GUITAR AND PERCUSSION NEW YORK PREMIERE of Karlheinz Stockhausen's KONTRA-PUNKTE "THIS WEEK'S CONCERT AND OPERA PROGRAMS." New York Times (1923-), May 12 1963, p. 1. ProQuest. Web. 29 Sep. 2023. "Weisberg Leads Premieres." New York Times (1923-), May 13 1963, p. 34. ProQuest. Web. 29 Sep. 2023. chamber music performance 1963-05-12T20:30:00