 Great ballet music by Tchaikovsky is not only found in his full-length ballets, but other places as well, including in his operas. And that ballet music comes from the opera The Maid of Orleans. And Theodor Kuchar conducted the Ukrainian National Symphony. Some more by Tchaikovsky. This is an arrangement that he made of the slow movement from his first string quartet, the Andante Cantabile. Mstislav Rostropovich is cellist.