There's no glamour in Nirvana, no glamour at all, in fact.

The online musical universe has become Balkanized, with many sites focusing on minute niches. That works well for reaching very specific demographics, which is wonderful for advertising, but it flies in the face of the common wisdom that people's tastes have become more diverse as music of any description has become a mouse-click away.

For Nirvana, putting out their first major-label record was like getting into a new car. But the runaway success was like suddenly discovering that the car was a Ferrari and the accelerator pedal was Krazy Glued to the floorboard.

Critics and fans use the music of their youth as reference points. For years, people seriously wondered who "the next Beatles" were going to be, and classic rock bands were the de facto yardstick for rock quality.

The most surprising and rewarding chapter to write was the Butthole Surfers chapter. I'd always thought of them as a bunch of drug-addled reprobates - which maybe they were - but it turned out to be more complicated than that.

I really believe in the power of music - and I mean literally the power of musical tones - to rearrange the way you can think.

When you're writing, you're only a brain and some fingers, but drumming, you're involving all four limbs, and you're hearing stuff and you're converting your ideas into physical motions, getting physical feedback from things you are touching - it's pretty cool. It's a really a nice contrast to writing.