Its pointless reviewing a tribute song - they tend to be more about the occasion than the music. But I will say that against all odds I liked this a lot. Also, a chance to see some of India's biggest singers in action in one place. And hey there are some actors in there too.
The song was written by Vishal Dadlani, composed by Vishal and Shekhar, produced by Red Chillies Idiot Box and the video was directed by Samar Khan. It goes live on TV-based music channels on the 29th.