Good rap is art! My best pal was a street poet back in the day and his on the fly lyric ability had us enthralled. No form of expression should be castigated or suppressed. Musically, synthetic bass can be more fun than a tired old vivace cacophony.I agree it is art. But is it the art of music or the art of rhyme & rhetoric expressed w/ music in the background? The description is not meant to be derogatory but I can't think of a better one. Interesting that you note that he was a "street poet" which is what many call themselves.