Director Anurag Basu and composer Pritam have been friends for nine years but as luck would have it "Gangster" is their first film together.

Basu though is more concerned about their friendship and says: "My mood just gets bad if I don't talk to Pritam for a long time." They are not just best friends but neighbours too.

There is even a swing between their houses. And guess what, Anurag gets to hear all the new songs composed by Pritam. A musical treat!