Joseph Schillinger (1895–1943), the eminent Russian-American music theorist, teacher and composer, emigrated to the United States in 1928, after having served in high positions in some of the major music institutions in the Ukraine, Khar'kov, Moscow, and Leningrad. He settled in New York, where he taught music, mathematics, art history, and his theory of rhythmic design at the New School for Social Research, New York University, and the Teachers College of Columbia University. He formulated a philosophical and practical system of music theory based on mathematics, and became a celebrated teacher of prominent composers and radio musicians. Schillinger's writings include: Kaleidophone: New Resources of Melody and Harmony (New York: M. Witmark, 1940; New York: Charles Colin, 1976); Schillinger System of Musical Composition, 2 vols. (New York: Carl Fischer, 1946; New York: Da Capo Press, 1977); Mathematical Basis of the Arts (New York: Philosophical Library, 1948; New York: Da Capo Press, 1976); Encyclopedia of Rhythms (New York: Charles Colin, 1966; New York: Da Capo Press, 1976).