Sergey Mikhaylovich Lyapunov (1859-1924) was a Russian composer, pianist, and conductor, recognized for his contributions to the late Romantic music tradition. He was influenced by both Russian folk music and the broader European classical canon, and his works often reflect a synthesis of these elements. Lyapunov is best known for his orchestral and chamber music, particularly the "Symphonic Poem" and "Concerto for Piano and Orchestra," which highlight his virtuosic piano skills and orchestral color. His "12 Etudes d'Execution Transcendante" for piano, inspired by Franz Liszt, is notable for its technical demands and expressive depth. Beyond his compositions, Lyapunov played a significant role in the preservation and promotion of Russian music, serving as a professor at the Saint Petersburg Conservatory and influencing a generation of musicians. His work is characterized by its lush harmonies and intricate textures, contributing to the evolution of Russian classical music in the early 20th century. While not as widely known as contemporaries like Rachmaninoff or Tchaikovsky, Lyapunov’s music remains an important part of the Russian repertoire and reflects the nationalistic spirit of his time.