The Importance of Music in Ancient Greek Thought

In the last book of the Republic he has this complaint that art is often only giving you a copy of something that's already a copy. He does have this other concern though which is about what he calls my Mises which means imitation. This seems to bring us to another very strong current in Greek thinking about art which is that art typically or maybe always is supposed to be an imitation of something else and often an imitation of nature.