Elly Kassman, Piano, and Vera Tilson, Soprano Entered from booking ledger and New York Times concert listing and review. According to the review, Bartók's 8 Hungarian Folksongs, BB 47, were sung in English. "CONCERT AND OPERA PROGRAMS FOR THE WEEK." New York Times (1923-Current file), Jan 13 1957, p. 1. ProQuest. Web. 28 Apr. 2021. "PIANIST IN RECITAL WITH SOPRANO HERE." New York Times (1923-Current file), Jan 20 1957, p. 76. ProQuest. Web. 30 Apr. 2021. joint recital 1957-01-19T17:30:00