I was working with ar rahman on something else at his studio and he asked me if i’d like to collaborate on this song, for his soundtrack of the film. I had read the book of the film (very inspiring) and am a big danny boyle fan who loves working with a r rahman, so i was really up for it. We wrote if i rise together, and we both sing on it.
I've seen the film now, and it's very intense and moving. The pivotal scene is definitely hard to watch, but it's amazingly shot and you really feel it.