Sidharth Malhotra says he worked hard to get into the mood of the song "Kala chashma" for the film "Baar Baar Dekho" and that he is now "eagerly waiting" for people's reaction to the song.

Sidharth is excited for his upcoming release 'Baar Baar Dekho', which also stars Katrina Kaif. And to surprise his fans, he posted a teaser of the promotional song "Kaala chashma" - an enhanced version of the old song - on social media on July 21.

The digital release of the song will take place on July 27.

"Kaala Chashma has been the most loved song of the 1990s. It used to be one of my favourite numbers too. I am eagerly waiting to see the reaction of the audience for this song. We have worked really hard to put together the enhanced version with full energy," Sidharth said in a statement.

Helmed by debutante director Nitya Mehra, the film narrates what happens in the life of a person from 18 years to 60. It is slated for release on September 9.