The Concord String Quartet Entered from booking ledger and New York Times concert listing and review. Although the group members are not identified, it is assumed the personnel was the same as the performance on May 7, 1973 in Carnegie Recital Hall. WORLD PREMIERE of William Bolcom's STRING QUARTET NO. 9 “Who Makes Music and Where.” New York Times [New York, N.Y., United States], 13 May 1973, p. 129. AL. Ericson, Raymond. “Concord Ensemble Plays Bolcom Piece.” New York Times [New York, N.Y., United States], 23 May 1973, p. 36. chamber music performance 1973-05-21T20:00:00