. . . "chamber music performance" . . . . . "The New Amsterdam Ensemble" . "Entered from booking ledger and New York Times concert listing and review. Only those musicians indicated in this record are identified by name.\r\n\"Who Makes Music.\" New York Times (1923-), 24 May 1970, p. 1. ProQuest. Web. 4 Aug. 2025.\r\nStrongin, Theodore. \"New Amsterdam Group Plays Joep Straesser: 'Musc for 2 Cellos' by Dutch Composer is Heard at Carnegie Recital Hall.\" New York Times (1923-), 26 May 1970, p. 31. ProQuest. Web. 4 Aug. 2025." . "1970-05-25T20:30:00"^^ .