<a href=http://www.tellychakkar.com/interviews/conversation-karan>Karan Johar</a> was recently seen on the sets of <a href=http://www.tellychakkar.com/news/x-factors-final-12-contestants-unveiled>X Factor</a> and he was there for a special reason. The successful director who is known to have a good ear for music took time out to listen to the contestants on the show. And the director was so happy with the quality of singers that he has promised the winner a chance to playback for his next film.