Anurag Kashyap`s most ambitious film 'Bombay Velvet' is going through a grueling session of high end VFX and editing. The film, that was initially announced as a Christmas release, has move to next year in May 2015. Now that he has some extra time in hand, Anurag has decided to shoot a music video with his film`s hero Ranbir Kapoor in January.

Anurag and his team are working on the theme of the song. It will feature Ranbir and they have few months before they start shooting with him. The idea has already been shared with him and he has given his go-ahead. He is currently shooting in Thailand and will come back and have an elaborate chat with Anurag about the song.

Niharika Khan, the costume designer for the film, has also been sounded off about this song shoot. Anurag shot the film in Sri Lanka where he recreated the era of 60`s Mumbai. In the film, Ranbir plays a street fighter while Anushka essays the role of a jazz singer.

This song will be shot in Mumbai over four days in January and RK has already given his dates. The theme of the song will be around the 60`s and other details are being finalised. Amit Trivedi has already composed the music on which the video will be featured.