I can understand why some people might look at me and say, 'What's she got to be depressed about?' I get that a lot in Britain, where mental health issues seem to be a big taboo.

I worry unnecessarily.

I'm such a chameleon. I never get bored.

Happy songs are very difficult to write. How many truly great upbeat songs are there?

You're only as good as your last record and you could get dropped.

You feel this pressure that people will take you more seriously if you play guitar, but I've decided I'm a singer and that's enough.

I would have been happy to have waited till I was in my mid- to late-30s before I got married, but you don't choose when these things happen, and when they do, there's no doubt in your mind.