"symphony orchestra performance" . "1969-03-01T20:30:00"^^ . . . . . "U.S. Debut of Maxim Shostakovich\r\nNote that violinist Viktor Tretyakov replaced Leonid Kogan, who was unable to perform due to illness. Mr. Tretyakov played Shostakovich's Violin Concerto No.2 in place of the Violin Concerto No.1, which was originally scheduled." . . . "Moscow State Symphony" . . .