Lyapunov, Sergei. (1859 - 1924) Autograph Letter to a pianist closely associated with his worksAutograph letter signed "S. Liapounow." 3 pp. 8vo. 19 September (2 Oct.) 1907. From St. Petersburg, in French. Addressed "Madame," an interesting letter from the Russian composer and pianist who succeeded Nikolai Rimsky Korsakov as assistant director of music at the Imperial Chapel and was later head of the Free Music School. He is largely remembered for his Douze tudes d'excution transcendente, which completed the cycle of the 24 major and minor keys