Mumbai, Dec. 6 -- The much awaited song from Zero featuring Shah Rukh Khan and Salman Khan, is finally here. Ever since news of them coming together for the song come out, their fans from around the world have been eager to witness these two actors come together.

In fact, interestingly, while the shoot of the song was going on, there were several people who just wanted to witness the two Khans shoot for the song together. After the song was launched, it also began trending on Twitter almost immediately.

A source reveals, "Salman and Shah Rukh shooting together had become such a topic of discussion that director Aanand L Rai after a point, had to switch off his phone as various people kept reaching out to him for permission, to come and wa...