As part of the promotional campaign for the movie Aarakshan, Amitabh ‘Big B’ Bachchan is all set to perform in Sony’s singing-reality show X Factor. Our source informs, “Amitabh Bachchan who will be seen essaying a strong character in his upcoming movie Aarakshan is leaving no stone unturned in the film’s promotion. The legendary actor will soon be seen in the singing-reality show X Factor as a special guest. The actor is scheduled to perform in the show and he will start shooting for the episode tomorrow morning.” Sonu Niigaam who is one of the judges in the show remained unavailable.