Michael Harrison
Michael Harrison (b. 1958) is an American contemporary classical music composer and pianist living in New York City.
Harrison creates dedicated tuning systems for many of his works. He pioneered a structural approach to composition in which the proportions of harmonic relationships organically determine other musical elements such as pitch, duration, and dynamics. He also invented the "harmonic piano", a grand piano that plays 24 notes per octave, documented in the Grove Dictionary of Musical Instruments.