The Polovtsian Dances from Borodin's Prince Igor consist of two numbers from the opera's second act (8 and 17). The first dance is the 'Dance of Polovtsian Maidens' while the remaining of the dances come from the second act finale. Borodin worked sporadically for almost 18 years on Prince Igor but it was left in an incomplete chaotic state upon his death in 1887. The dances here were orchestrated by Nikolai Rimsky-Korsakov for an 1879 concert performance and subsequently revised by him after the opera's publication in 1888. This newly engraved edition by Richard W. Sargeant, Jr. has been meticulously researched from authoritative sources so that Borodin's masterful dances are available for the enjoyment of professionals and amateurs alike. IMSLP page Wikipedia article