You can have an opinion about anything, even if it's wrong. Actualy in this case, I can. See the word "beauty" in the definition? Not everyone finds the same things beautifull. Yes for him it's music, but not for me. Suppose some sick psycho dude tortures people and records the sounds they make because he likes it. For him it is music, would it be music for you? I don't like rap music, doesn't that make sence to you? That's your opinion and I can't do anything about your opinion.