Later in life, do you think there is a difference between a child who listened to classical music when they were young and a child who listened to mumble rap?
I think it does. Classical music will lead to cognitively superiority. But I also think that a lot of rap music is also a powerful subconscious affirmation; depending on the artist you hear a lot about crime or money – if you listen to rap that is only about crime, then you'll probably end up with less-defined ethics and perhaps as a criminal. But rap about money, wealth, beautiful girls will make it more likely that you actually strive and have those things.