Nirvana sucks. Black Sabbath is no good at all. Metallica is crap as well. AC/DC is not good either. Rap, Hip Hop and R&B is the only music worth listening too. Anybody can learn to play a guitar. Anyone can shriek at the top of their lungs into a microphone. (The rap equivalant of this would be Lil Jon, who should not rap) You can't learn to rap, it's a skill very few possess. Sure, anyone can write a little poem. But let's see you go and write 12-18 great poems, put a great beat behind it, and rap it.