Aristoxenus of Tarentum
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Aristoxenus of Tarentum(ărĭstŏk`sənəs, tərĕn`təm), fl. 4th cent. B.C., pupil of Aristotle. He marks a turning point in Greek musical theory by being the first to base theory on analysis of musical practice. In his two extant treatises, Elements of Rhythm and Elements of Harmony, he systematized Greek music by clear definitions of terms and orderly arrangement of scales.
See H. S. Macran, The Harmonics of Aristoxenus (1902).