I agree that (a) probably is enjoyment on a less complete level, but it bothers me to call it superficial. I have loved music (especially metal) for so long that I know my attachement is not superficial. The music (apart from lyrics) give me an enjoyment beyond most other forms of art, and most other activities. There are different aspects of any type of art. A painting has color, texture, subject, interpretation of subject and more. Noticing these things separately is a good thing. I understand that the finished product is what was meant to be experienced, but someone especially enamored with the use of color is not necessarily being superficial. But I realize that painting and music are quite different, and the comparison is not 100% analogous. I also realize that in totally throwing the lyrics out, I am disregarding part of the music. I don't entirely disregard lyrics, but I typically don't read lyric sheets, so in many cases I do entirely disregard them. That's my own problem.