Shah Rukh Khan dances in the streets of London

'Challa', the first song from the highly anticipated Shah Rukh Khan movie 'Jab Tak Hai Jaan' has finally been released.

Shah Rukh Khan is seen strumming a guitar and singing in different locales across London.

It's a solo song featuring SRK and the leading lady Katrina Kaif comes in the frame only in the end. It is most probably the song where SRK meets his lady love for the first time.

Shah Rukh Khan recently tweeted, "Challa will be out on the Oct 1 (Monday). Looking forward to it, haven't seen it since we finished shooting it,"

The song is sung by singer Rabbi Shergill, who shot to fame in 2005 after his song 'Bulla Ki Jaana' topped the charts.

The music is composed by AR Rahman, with lyrics by Gulzar.

The movie will be Yash Chopra's final offering to Bollywood as a director and will release on November 13.