Ramones or AC/DC are two bands that have managed to keep their signature sound and their signature formula for years and years and album after album after album, without it seeming like a dead-end street.

The Nirvana unplugged album was something we'd always knew we were capable of doing, but it was just a matter of doing it right.

When it comes to making an album I take that very seriously. I am meticulous, overworked. That's my time to put everything under the microscope.

'In Utero' was the first time I'd made an album that reached into the dark side. I remember the conflict and the uncertainty. I remember all those things when I hear 'Pennyroyal Tea.'