Половецкие пляски
Borodin's primary occupation was chemistry, including research and teaching. However, he also spent much time in support of women's causes, much to the consternation of his fellow composers, who felt he should devote his time and talent to music. In 1876, a frustrated Stasov gave up hope that Borodin would ever finish "Prince Igor", and offered his scenario to Rimsky-Korsakov. Rimsky-Korsakov instead assisted Borodin in orchestrating important numbers in preparation for concert performance; for example, the "Polovtsian Dances" in 1879: