Kareena Kapoor-Fardeen Khan starrier 'Dev' is waiting to hit the theatres. Director Govind Nihalani says it's much more than chemistry between them and a different formula with a special musical note. Kareena has sing a song for this film. "I don't know how people will react to my song in the film. I have an awfully harsh voice but it was completely Govindji's vision to make me sing. I apologise to all my fans in advance for croaking", she express.