You’re probably more likely to be familiar with this song as the opening music for the movie, Inside Man, but I came across it much earlier in this Bollywood video called Dil Se staring Shah Rukh Khan (kind of like India’s Tom Cruise).
This song comes fairly early in the movie and, as is sometimes the case in Bollywood movies, doesn’t really factor into the storyline. The girl is a model/actress named Malaika Arora and, aside from this clip, plays no part in the movie. Instead the lead female role in the movie is played by another woman, Manisha Koirala.
The sequence was filmed in five days exactly as seen, without any special effects. Khan had no safety tether during at least some parts of the train top dance.
I think this is probably one of the best dance sequences ever made and planned at one point to join my daughter on a trip to India, so I could see the Ooty train where this was filmed. I got the visa, but then decided not to go. My daughter, who was working for an NGO in Nepal at the time, made the trip on her own, visiting several sites in India, but she didn’t go see he train.
After seeing the dance clip, I bought the two hour and forty minute DVD and watched it. It is just your basic love story between a guy and a suicide bomber. You can skip the movie and just watch the ending here.