For specific tracks like the "Polovtsian Dances" or "Igor's Aria," use these specialized music sites:
If you are looking for the full 4-act experience with the prologue, these platforms offer comprehensive files: skachat operu kniaz igor mp3
опера "КНЯЗЬ ИГОРЬ" - Нотный архив Бориса Тараканова For specific tracks like the "Polovtsian Dances" or