King Khan to perform item song

Dard –e –disco had a great dance by Shahrukh Khan choreographed by Farah Khan and after watching the song Khan got a call from Rakesh Roshan to perform an item song for a movie that will be similar to dard –e-disco but the question is that why Hrithik is not doing the song in his father’s movie and the reason is that Hrithik has to go for a knee medication to Singapore.