We're more of a touring band than we are anything else, because it kind of all makes sense when we're on the stage. For us, success in America would be having as many people come to see us as they do in the UK and Europe, and I think anything that would surpass that would just be a surprise to us.

Sex is more openly spoken about than 40, 50 years ago, and I think probably in comparison to a lot of bands - certainly other contemporary pop girl bands - we're certainly not as suggestive. We talk about sex in the way that we would to our friends. As a girl group, I think it was important not to avoid those sort of things either, because it's about confronting people's idea of what women should be talking about and how they should talk about it. There's no point in shying away from subjects like that, because they exist.

In a world where globalisation wants to turn everybody into the same thing, I think that anything that allows you to go to another place or be in another world has got to be celebrated.

My aim is to be able to be more spontaneous so I keep evolving my live set-up.

Music is enough of an expression that it doesn't really matter what the words are or what language it's in.

I instinctively want to create pop songs and I think it's really good to challenge that, otherwise it becomes a habit.

I find it strange that there isn't more of a melting pot of language within the pop charts. I feel it becomes really two dimensional when everything's in English.