. . . "choir performance" . . . "1929-04-19T20:00:00"^^ . . "Agreneva-Slaviansky Royal Russian Choir" . "Entered from New York Times concert listing and review (\"Programs of the Week,\" April 14, 1929, pg. 130; \"Russian Choir Sings With Great Beauty\" by Olin Downes, April 20, 1929, pg. 26) and program calendar; stated time is approximate. The chorus, appearing in \"native dress,\" performed a program comprised entirely of Russian folk music. Conductor Margarita Agreneva-Slaviansky led the chorus facing the audience." .