Aristoxenus of Tarentum was a Greek Peripatetic philosopher, and a pupil of Aristotle. Most of his writings, which dealt with philosophy, ethics and music, have been lost, but one musical treatise, Elements of Harmony, survives incomplete, as well as some fragments concerning rhythm and meter. The Elements is the chief source of our knowledge of ancient Greek music.
A modern imagining of the appearance of Aristoxenus.
The Peripatetic school was a philosophical school founded in 335 BC by Aristotle in the Lyceum in Ancient Athens. It was an informal institution whose members conducted philosophical and scientific inquiries. After the middle of the 3rd century BC, the school fell into decline, and it was not until the Roman Empire that there was a revival.
Aristotle and his disciples – Alexander, Demetrius, Theophrastus, and Strato, in an 1888 fresco in the portico of the National University of Athens
Aristotle's School, a painting from the 1880s by Gustav Adolph Spangenberg