. . "radio broadcast" . . . . "Entered from New York Times concert listing and review (\"Programs of the Week,\" March 29, 1931, pg. x10; \"Jazz Piano Concerto Premiere,\" March 30, 1931, pg. 28) and program calendars.\r\nBroadcast on radio station WOR.\r\nWORLD PREMIERE of Emil Velazco's KALEIDOSCOPE" . "1931-03-29T21:00:00"^^ . . . "symphony orchestra performance" . . . . "Manhattan Symphony Orchestra" .