Actor-singer Farhan Akhtar, who has previously sung in films like `Rock On!!`, `Zindagi Na Milegi Dobara` and `Dil Dhadakne Do`, on Wednesday recorded a special song titled `Atrangi yaari` for his forthcoming release `Wazir`.

The song in question is the crux of the film. It talks about unusual friendships, which is also the theme of the film.

The promotional track, composed by Rochak Kohli and penned by Gurpreet Saini and Deepak Ramola, will feature in the end credits.

It is said to be producer Vidhu Vinod Chopra's idea to have Farhan sing a song in `Wazir`, which also stars megastar Amitabh Bachchan.

Directed by Bejoy Nambiar, Wazir is set to release on January 8 next year.