It is well known that Tamil composer G V Prakash Kumar, who is the nephew of A.R. Rahman, will be making his Bollywood debut with Shirish Kunder's film Joker.
Although he has composed quite a few numbers for the film, the much-hyped number Kaafirana isn't his. The song, filmed with Chitrangada Singh and choreographed by Farah Khan, has become a huge hit ever since it was leaked a few days back.
Apparently, Kumar could not finish this particular song on time and hence another composer Gaurav Dagaonkar was roped in.
Hence, the credit for the film's music has been given to Prakash as well as Gaurav.