I love classical music. I love a lot of musicians playing together and the whole culture of that, whether it's Indian or it's Western.

I played a couple of ideas and then had this unusual texture underneath which was like this little granulated kind of pipe organ almost like a scratchy record which he started [inaudible] brilliantly. "Oh I love that song." And when things go fine, it's good. So he started loving that song and that song was used quite a lot in the movie which is very granulated stuff on the guitar.

The more I compose, the more I know that I don't know it all. I think it's a good way to start. If you think you know it all, the work becomes a repetition of what you've already done.

That was a very different emotion and I felt Dido's words would be good and I had a template with my voice in it. Then, when he heard it, he wanted both our voices together in it and that's the scene when he sees the boy and then he gets charged to go on that final cutting effort.

No regrets. There is no time for that. Regret is boring.

I've been doing music for many years and after a point what is the motivation that drives you to compose and to do stuff? I did this song for the U.N., a fighting for poverty anthem. That's when I realized that I could do a foundation. And when I started the foundation, it was basically to fight poverty and to help - that kind of stuff.

The more you know the less you talk.