By roping in international pop star Akon for the song `Chamak Challo`, Shahrukh created ripples and the song has become a sensation.
However, not stopping at this, Shahrukh was also in talks with the international sensation pop singer Lady Gaga about collaborating on a song.
"We were looking at speaking to Gaga`s manager about doing a song and attending the premiere on October 25 at London. We were not able to get to or speak to the management.
But as there was no time, all this will not happen," Shahrukh told reporters here.
`Ra.One`, a superhero film, is set to release on October 26.