Over the last 10 years, there have been so many incredible albums created in bedrooms by people who never would've gotten an album deal. People keep thinking of professional music studios like they've always been this way for hundreds of years, but they're very much a child of the 70s. Even the interior is very 70s. Everything's brown and it's wood - somebody told me the wood panels are all by the same company. We're always mourning things that have died. It's a bit much sometimes. These studios have no fresh air, and there's this unwritten rule that they don't have windows, either.

I've written arrangements for choirs and strings in the past, but I usually write music with my voice or a keyboard and then I'll get someone who is good at writing scores to write it out. Or, if I have the luxury of time, I will go in a room and hear the people perform and then change it through what I hear, not on paper. I can read music OK, but I probably rebelled a little - music changes into something else when you read it.

Maybe it's just a personal thing, but I get so much grounding from Iceland because I know it's always going to be there. I have a very happy, healthy relationship with the country, so it's really easy to go everywhere because I always have Iceland to go back to. It's sort of a contradiction, but that's how it works somehow.

Over the last 10 years, there have been so many incredible albums created in bedrooms by people who never would've gotten an album deal. People keep thinking of professional music studios like they've always been this way for hundreds of years, but they're very much a child of the 70s. Even the interior is very 70s. Everything's brown and it's wood - somebody told me the wood panels are all by the same company. We're always mourning things that have died. It's a bit much sometimes. These studios have no fresh air, and there's this unwritten rule that they don't have windows, either.

I have always had a certain song in my head, a certain chemistry of sounds.

I want to support young girls who are in their 20s now and tell them: You're not just imagining things. It's tough. Everything that a guy says once, you have to say five times. Girls now are also faced with different problems. I've been guilty of one thing: After being the only girl in bands for 10 years, I learned - the hard way - that if I was going to get my ideas through, I was going to have to pretend that they - men - had the ideas.

When I met Apple, I made it very clear that I am an old punk and I have never done commercials or been sponsored. And I wasn't after their money.