. . . . . "Heifetz-Piatigorsky Concert" . . . "chamber music performance" . "1964-09-17T19:00:00"^^ . "joint recital" . "The Mannes College of Music in association with Columbia Festivals, Inc., presents The Heifetz-Piatigorsky Concerts with Leonard Pennario\r\nEncore information added as per the review published in the New York Times.\r\nSchonberg, Harold C. \"Music: Heifetz Returns: Piatigorsky Joins Him in Carnegie Concert.\" New York Times (1923-), 18 Sept. 1964, p. 27. ProQuest. Web. 11 Aug. 2025." . . .