Let's face it. All ideas have existed before. All knowledge exists in the void and every once in a while a person will rediscover it. I think Plato said that or some shit. I'm not sure how true it is because I'm pretty sure that Plato didn't have an iPhone but I wasn't there so I don't really know. All music has already been made. That's why we took the easy way out by making music with stuff that already exists. But we aren't the only ones.