Starring Sidharth Malhotra and Katrina Kaif in lead roles, the romantic-drama is helmed by debutant director Nitya Mehra.
The makers have got their hands off on the copyrights of singer Amar Arshi's 1990s Punjabi chartbuster "Tenu Kala Chashma Jajta Ve" and will be releasing a revamped version of the track on July 27.
Johar feels the song symbolises the celebratory mood of the film.
"'Baar Baar Dekho' is a celebration of life and love and we thought the song would encapsulate that ethos in the best possible way. It kickstarts our campaign and the trailer will be out soon after," Johar said in a statement here.
"'Kala Chashma 2.0' is a party starter and has been the heartbeat of the Punjabi music scene for over a decade... Our revamped and rejuvenated version has enhanced the energy to an altogether different level," the filmmaker said.
Co-produced by Excel Entertainment, the film is set to hit screens on September 9.
Mehra said that they zeroed in on the popular track as it was perfect to announce the arrival of the film's trailer.
"Kala Chashma, or KC as I call it, is a celebratory song. Since 'Baar Baar Dekho' is a film that celebrates relationships, we wanted a banging number to announce the arrival of its trailer," she said.
The song "Kala Chashma" has been composed and recreated by Badshah, with vocals of Amar Arshi, Badshah and Neha Kakkar. The video has been choreographed by duo Bosco-Caesar.
