It seems Ram Gopal Varma's Sholay gets more interesting, colourful and controversial by the day.

Besides the ongoing stories about this star dropping out, and that star joining on, the latest addition to its already huge casting coups is Abhishek Bachchan. Abhi joins the Sholay team in a very special appearance.

Abhishek will appeare in a song and dance, lip-syncing to Ganesh Hedge's version of R.D. Burman's Mehbooba o mehbooba while Urmila will groove to the funky beat with him. While senior Bachchan, who is playing Gabbar in the film, looks on.

In the original Sholay, it was Helen who danced, Jalal Agha crooned and Amjad Khan looked on.

Ram Gopal Varma is excited about this, saying, "Abhishek is delighted to step into the cameo. If you remember he was originally cast as Veeru (the part that Mohit Ahlawat later took up). But he had to beg off due to date problems. When Abhishek heard Ganesh Hegde's track he immediately offered to perform in the song with Urmila. He's really excited about it. He himself volunteered to do it."

Urmila, who played Abhishek's Bhabhi in Anupam Kher's Om Jai Jagdish, is very excited about having both the Bachchans together for her dance.

Adds Ramu, "The primary difference between the other Amitabh-Abhishek songs like Kajra Re and Rock'n'roll Soniye is that the father and son have been highly interactive in these songs. In my film they might not even look at one another."