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"The first track from Jab Tak Hai Jaan was released today (October 1). With lyrics by Gulzar, music by AR Rahman and performance by Punjabi-Sufiyana singer Rabbi Shergill, the video for &amp;#039;Challa&amp;#039; sees Shah Rukh Khan busking around locations in London including Trafalgar Square, Butler&amp;#039;s Wharf, the South Bank, Canary Wharf and St Pancras Station.      Speaking on Twitter, Khan announced the song&amp;#039;s release by saying: &amp;quot;Challa will be out on the 1st of Oct. Looking forward to it ... haven&amp;#039;t seen it since we finished shooting it.&amp;quot; Khan plays a bomb disposal expert called Samar in the film, which also stars Katrina Kaif and Anushka Sharma.  In a recent &amp;#039;In Conversation&amp;#039; interview with Yash Chopra to mark the acclaimed director&amp;#039;s 80th birthday, Khan described working with Yash Chopra as the &amp;quot;nicest experience&amp;quot; of his career.  Chopra and Khan sang a couple of lines from &amp;#039;Challa&amp;#039; during the talk. The actor also revealed some of the  lyrics from the film&amp;#039;s title track on Twitter.  Jab Tak Hai Jaan releases on November 13.  "^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.digitalspy.com/bollywood/news/a409253/challa-song-from-jab-tak-hai-jaan-released-video/>