What was different about approach to writing the music for Swan Lake?

The approach to writing the music for Swan Lake was different in several ways. Firstly, Tchaikovsky used a technique called leitmotif, where specific melodies and themes are associated with particular characters or ideas throughout the ballet. This technique helped to create a sense of unity and coherence within the music and to enhance the emotional impact of the story. Secondly, Tchaikovsky incorporated elements of Russian folk music into the ballet's score, giving it a distinctly nationalistic flavour. Thirdly, he made extensive use of the orchestra, employing a wide range of instruments and textures to create a rich and varied soundscape. Finally, Tchaikovsky's use of harmony and melody in Swan Lake was innovative and groundbreaking, pushing the boundaries of what was considered possible in ballet music at the time.