I really do have to get back to work, but let me take a moment to say further that I first decided I thought Cobain was a great guitarist when I heard "Serve the Servants" off of In Utero at a loud volume -- breathaking guitar on that song. Since then I've come to appreciate Cobain's (in my subjective view!) awesome dirty and big guitar style in live recordings and even on the overly-slick-and-brittle-sounding Nevermind album.