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. "Who Makes Music." New York Times (1923-), 24 May 1970, p. 1. ProQuest. Web. 4 Aug. 2025. Strongin, 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. chamber music performance 1970-05-25T20:30:00