Kolkata, Mar 19 (ANI): Bollywood superstar and the most respected gentleman in the film fraternity Amitabh Bachchan, along with his son Abhishek Bachchan, reached the Kolkata airport on Saturday evening ahead of the most-awaited India-Pakistan match. Big B will be singing the Indian national anthem during the World T20 clash between arch-rivals India and Pakistan at the Eden Gardens in Kolkata this evening.