I like the idea about somewhere there being a world... somewhere there's a world that I don't know about. But also, that somewhere, there was once something that disappeared.

Lauryn Hill is quite political and is very bold and isn't afraid of wearing her heart on her sleeve, and same with Bjork, except she is a little bit more kind of fragile.

I wrote 'Lights' a long, long time ago. And I expected it to be on the album, because it was - I wrote it with 'Biff' Stannard. And he wrote every single Spice Girls song and every single pop song of the 90s, basically. So I thought, you know, I was really lucky to work with him, but I didn't think it would be a big song for some reason.

I don't think there was ever a moment when I was like, 'Yeah, I want to be a singer!' I guess it just happened. I performed a lot when I was younger and stuff, but I remember getting to the point where I thought I might have to get a normal job.

I wrote a lot of poetry that was based on stories of the sea and I was really inspired by that.

I've always said that Adele has turned so many people on to British singers - whether female singers or just like music from this country in general.

I met Prince William at a musical festival and he let me know he was a fan of my music. But the invitation to sing at his wedding reception came completely out of the blue. The fact that Kate and William knew the words to my songs was very touching.