“The introduction of a new kind of music must be shunned as imperiling the whole state, for styles of music are never disturbed without affecting the most important political institutions. ... The new style, gradually gaining a lodgment, quietly insinuates itself into manners and customs, and from it ... goes on to attack laws and constitutions, displaying the utmost impudence, until it ends by overturning everything.”
--Plato, "The Republic"