Bon Jovi's trick is to use heavy-metal chords and still sound absolutely safe. Rock & roll used to be rebellion disguised as commercialism; now so much of it is commercialism disguised as rebellion.

Just as not all popular albums are wonderful, not all wonderful albums are popular.

In eras past, mainstream culture was blandly, blindly complacent, so underground music was angry and dissatisfied. But now, mainstream culture isn’t complacent, it’s stupid and angry; underground culture reacts by becoming smarter, more serene. That’s not wimpy—it’s powerful and productive.

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.

Ten percent of the American population thinks that Barack Obama is a Muslim. Those are the people that have not learned the skill of filtering information from the vast barrage of inaccurate information that we're all faced with everyday. I think that's a very 21st century skill.

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.