It's the little things that stick with you though. Like the boring airport layovers and the bus breaking down in Prague. Those were the real bonding moments.

I remember writing Sunday Morning' and Gwen wasn't feeling well that day and I had an acoustic guitar and I started singing, Somebody is feeling quite ill ' and that became Sunday Morning.'

I think back on it now and even though Gwen and I were living through a tough time with the breakup, as creative partners, that took precedence in our lives. Even though we were going through this really emotional stuff, which obviously ended out coming out in the music, we managed to stay really close and be creative partners through all of that.

There was always a real camaraderie with No Doubt. It was always more than the music.

We were teens in the Eighties, and that's the kind of music that we all grew up on. When you're in those really formative years, from, like, 13 to 19, what you listen to is so influential, and I think that's just part of our being now.

It's always hard to talk about music and describe a song.