Cannes, May 15 -- The first film I saw at the Cannes Film Festival was only six minutes long. It was a snippet of a VR film, which attempts to engage all your senses including smell. But that isn't the most unusual thing about Le Musk. The most unusual thing is that it's been directed by one of the world's greatest living composers - A. R. Rahman.

Rahman was in Cannes to give a talk about his passion project, which is already three years in the making. The film, presented by Intel, is a non-linear sensory experience with beautiful and unsettling visuals. Le Musk asks intriguing questions - what is the scent of fear, what is the scent of joy. I asked Rahman if it would also provide answers. He smiled and said the important thing is to ask...