<<Ok, so if rap is an assault on your eardrums you can't PRETEND to like it (or pose as an expert, eg: "I have listened".>>
Having listened to, and claiming to be an expert about music are not even close to the same. I only mention that I have listened to rap to defeat your common argument that a person who feels it is "crap" is ignorant of the genre.
<<The human voice, turntables, samples and computer-generated sounds electronic sounds are REAL instruments.>>
Maybe I should have clarified it by stating that I prefer traditional instruments. Nearly anyone can learn to play an instrument, but it takes true talent to compose music that is pleasing to a lot of people. While it does take some talent to learn to generate music with a synthesiser, it is not nearly as difficult. It is the talent a musician shows that impresses me.
<<Vocals are part of hip hop/rap.>>
Again, this is subjective. Vocals are more a part of the background or chorus, while in the music that I prefer, vocals are the central portion of the song.
<<Hate lyrics and glorifying violence . . . Heard any death metal lately? That is rock (created by true artists in your opinion?).>>
Where did I say I listen to death metal? I dislike it for the same reasons. Where did I say those people are "true artists?"
<<Adolescent hood "artists" not found in rock?>>
They are, but inarguably to a much lesser extent.
Again, you are completely missing my point. Everything we are arguing is subjective. As I already stated, it is not possible for you and I to debate the value of rap as compared to classic rock, or vice versa. I can only state why I prefer one over the other.
You might want to read some more of Joyce, as it seems some of the important points are being lost on you. I'll summarize:
In A Portrait of the Artist as a Young Man, art is explicitly defined. It's been some time since I read the novel, so I don't remember all of the qualifications, but aesthetic value (in the case of music, pleasing to the ears), originiality, and individuality (containing a personal part of the artist) are the central points. He goes on to argue, however, that all art is subjective. No one can define art for another, and no one can expect another to appreciate something simply because it is defined as art. While there are certain qualities that each of us subconsciously use to judge something as art, the combination of each is what we use as individuals to define what is art to ourselves.
Again, I have listened to rap. I have been exposed to most variations of the music. While I may enjoy an individual song here and there, overall the genre does not fit my own personal definititions of what is good. Hence to me, it is "crap".