Jab Tak Hai Jaan is 's last film as a director. After eight years, Shahrukh Khan and Yash Chopra have teamed up again for Jab Tak Hai Jaan. While the first trailer of the movie created a stir with its beautiful poetry, the first song 'Challa' will impress you with its mesmerising lyrics and locations.
In 'Challa' song, Shahrukh Khan is roaming in the streets of London and he suddenly bumps into Katrina Kaif for the first time. Talking about this song Shahrukh Khan posted on Twitter, "Challa will be out on the Oct 1 (Monday). Looking forward to it, haven't seen it since we finished shooting it."