Shah Rukh Khan launches 'Ra.One' soundtrack

Shah Rukh Khan has unveiled the music to his new superhero project Ra.One.

The actor had earlier expressed his disappointment that the music had leaked online, several days before Monday's official launch.

"How sad it is that someone somewhere has no regard for our labour of love. Five years of work and they put it on the net so callously. Extremely sad," Khan posted on Twitter.

Music composer duo Vishal and Shekhar played live on stage at the event, with the star performing in his character of G.One.

Filmmaker Tarun Mansukhani, who reportedly directed a number of scenes in the film, announced that he wished he had super powers, in order to avoid Mumbai traffic on the way to the venue.

Abhishek Bachchan then used this opportunity to bring up Mansukhani's long-delayed sequel to Dostana.

"I wish you had the super power to finish your script," said Bachchan.

The Ra.One soundtrack features contributions from international R&B star Akon.

Ra.One - billed as India's first superhero film - releases October 26.

Watch the high definition Ra.One trailer below: