Moscow State Symphony U.S. Debut of Maxim Shostakovich | All-Shostakovich Program 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. symphony orchestra performance 1969-03-01T20:30:00