First time director Samir Karnik, is indeed a lucky guy.

We hear that he has convinced the leading cast of his flick titled, Kyon Ho Gaya Na to lend their vocals for the film's soundtrack.

Amitabh Bachchan, Vivek Oberoi and Aishwarya Rai have all agreed to sing for the title track in the film, composed by Shankar-Eshaan-Loy and written by Javed Akhtar.

Of course the audience is used to hearing Amitabh Bachchan and Aishwarya sing in films.

But we wonder how Vivek Oberoi will impress Bollywood fanatics with his vocal talent?

Well we will have to wait and see when the film releases.

For those who are not aware, Bollywood film songs are usually sung by professional playback singers which the actors mime to on celluloid.