Michael Harrison
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Michael Harrison (1958-2026) was an American contemporary classical music composer and pianist living in New York City.
Harrison created 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.