Jab Tak Hai Jaan: Shahrukh Khan's Challa song, No. 1 video on YouTube worldwide!

Mumbai: It's a great news for all the Shahrukh Khan fans out there. The latest title track 'Challa' from Shahrukh Khan's upcoming film Jab Tak Hai Jaan (JTHJ) has triggered extreme frenzy worldwide. Reportedly, Khan's 'Challa' song has become the number one most viewed video worldwide on YouTube this week.

Confirming this, SRK has thanked all his fans on Twitter, "Thank u everyone...." The song 'Challa' is sung by famous Sufi singer Rabbi Shergil (Bhulla Ki Jaane fame). The song too has a Sufi touch in it. The music of Jab Tak Hai Jaan is composed by Oscar winner AR Rahman.

Jab Tak Hai Jaan is Yash Chopra's last film as a director. The director revealed on his 80th birthday that 'Challa' is his favourite song from Jab Tak Hai Jaan. Yash Chopra also confirmed that he will very soon shoot his signature white saree song, where Katrina Kaif will be wearing a white saree in Swiss Alps.