On the subject of art - I have done only little research regarding different
Actually, art and tragedy in particular had an ambivalent role in some ancient Greek philosophy. In the Republic and the Ion, Plato presented a critique of art based on his imitation (mimetc) account of art. For Plato, art was merely imitatory and tragedy in particular involved the magnification of evil. Plato held that if X is evil, the imitation of X is evil. In the Republic he spoke of the warefare between poetry and philosophy. But art and tragedy had a major defender in Aristotle who thought imitation is itself the key to education and he further proposed that tragedy was an essential instrument in the purification of our moral judgments. In the history of philosophy, outside the ancients, probably the leading defender of Greek tragedy is Nietzsche. Among more recent philosophers, you might consult Gadamer on art.