Big B sings along with Farhan Akhtar for 'Wazir'

Farhan Akhtar and Amitabh Bachchan

There was a lot of ‘will he, won't he' buzz over Farhan Akhtar singing in his upcoming release, Wazir. While recent reports suggest that the actor has indeed lent his voice to a special song, we have found out that his co-star Amitabh Bachchan has also sung along with him.

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Farhan Akhtar and Amitabh Bachchan

The promotional track, which will feature in the end credits, is titled Atrangi Yaari. Says a source close to the film, "It was producer Vidhu Vinod Chopra's idea to make them sing together. That particular track is the crux of the film; it is on unusual friendships, which is, basically, the theme of Wazir."

Farhan and Big B have discussed the song at length and are excited about the duet. "Off screen too, the two share a warm bond. They catch up with each other on Twitter at odd hours. These days, Farhan addresses Sr Bachchan by his character's name in the film, Panditji," adds the source.

The song has been penned by Gurpreet Saini and Deepak Ramola with Rochak Kohli as the composer.