Old one..came sometime back in Dec 2008... Rahman said, "Some of the songs in Lajjo were generic, so we have translocated them into Ravana. Such things happen once in a while. No regrets. There is no time for that. Regret is boring. Mani's new film is a new genre for me. I've done nothing like this before. So that's exciting."
http://entertainment.oneindia.in/bollywood/gupshup/2008/abhishek-aishwarya-ravana-041208.html