What's common to 'Rozana', 'Mere Angne Main Tumhara Kya Kaam Hai', 'Neela Aasman So Gaya' and 'Hanuman Chalisa'?

Well, for those who worship Bollywood religiously, this must be as simple like an MBA grad learning ABC. But for the rest of the unaware lot, the common factor that binds all of the above is the one and only Amitabh Bachchan as he has done the 'vocals' for all of the above tracks.

t's not rocket science to say that the Big B has always been a trendsetter of sorts. This time round, Bachchan has got yet another first by singing for a commercial as well as acting in it. The product in the spotlight is the famous 'Himani Navratna Oil', for which Big B is also the brand ambassador.

While the ad has been shot by Sujoy Ghosh, (who is also directing Big B in Aladin), the jingle has been composed by the versatile duo of Vishal - Shekhar.

And if sources are to be believed, then news has it that Big B spent long hours in the studio with the musicians and also enhanced the ad by providing his own inputs.

And considering the fact the ad has been the as choreographed by the popular duo Bosco - Caesar, the ad simply becomes a must watch.

Talking about the 'experience' of working with the Big B, Sujoy reminisces, "It was amazing because before I could even ask them, they were there. It was like going back to the sets of Aladin. He has an incredible energy level that comes across on the screen as well. We had an amazing time shooting the ad with him."

Any more news about the ad, we will surely kill ourselves due to suspense and curiosity. To cut a long story short, simply bring on the ad, we say...