Since I worked with Danny Boyle before on Slumdog Millionaire, we have great success and everything. So, when I first got the script and the screenplay of Simon (Beaufoy) and I was reading it, even before the shoot, some kind of sounds came into my mind and I put some stuff [down] and sent it to Danny when he was cutting the movie.

Because when you work with a different team, the expectations are different and then you deliver in a very different way. You look back at it and you're proud of yourself. And when the same people come in and you do the same thing, it's boring. You could re-envision it again and again but when the new chemistry of ideas comes in, something happens as a team.

Sometimes I intentionally cut it off. I just want to be in silence, especially when I'm traveling. I watch movies without sound.

Certain things are done intentionally opposite - like there's no sound at the end or synthesizers or all that stuff. Anything that drowns the movie, no. Anything that makes you sit up and watch it, yes. So, some are expecting a very sad theme going on.

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 search is more important than the destination

Music is language itself. It should not have any barriers of caste, creed, language or anything. Music is one, only cultures are different. Music is the language of languages. It is the ultimate mother of languages.