Just how he manages to cram it all in within 24 hours is a mystery, But Amitabh Bachchan has one more achievement to his credit. He has just shot a music video for Yashraj Films.

"It's the visuals for the rap track B&B for Bunty Aur Babli. It's very catchy and very young. Let's see how I've done," says AB, guarded as usual.

But according to sources at Yashraj Films, the music video totally rocks.

So much so, that they have decided to actually use the song in the film.

Explains AB, "That shouldn't be of any surprise. The trend of putting a music video or an item song with the opening titles or end titles began at Yashraj Films with Dhoom. I won't be surprised if my number is used for the opening titles of Bunty Aur Babli. I really enjoyed filming it."

Shiamak Davar, who wasn't physically present at the shooting, choreographed the number.

"Though Shiamak was out of the country, he gave instructions by proxy. We had no problem following his dance steps," says AB.

This isn't the first item song that AB has shot for Bunty Aur Babli. "I've done a qawwali number with Abhishek and Aishwarya, though I haven't seen how it looks on screen. If anything goes wrong, I can always excuse myself saying my character is drunk in the number," he jokes.

AB is no stranger to music videos. In the 1980s, when he had temporarily given up film acting, he shot a music video based on his hit song Kabhi kabhi mere dil mein with Tamil actress Shobhana. More recently, he did the whacky Kabhi nahin with Adnan Sami.

"These are minor diversions meant to generate fun. Frankly, I think I'm too old to be doing dance numbers," says the ever youthful Bachchan. But going by the way B&B looks, it seems like a long way off before the senior Bachchan can say goodbye to singing and dancing.