Within hours of its release, the track First Class from Abhishek Varman's period drama Kalank is already ruling the music charts. The introductory song for Varun Dhawan showcases the terrific chemistry between the young superstar and Kiara Advani. Earlier this month, Varun and Kiara also performed together during the Zee Cine Awards 2019.

Varun, who is all praises for his co-star, says, `Kiara and I hit it off immediately. She's hard-working, driven and always has a smile on her face. There is a lot of give and take between my character (Zafar) and her, which, I think, she's done beautifully in the film. I asked her just once to be part of this song and she agreed. I'm looking forward to working with her in the future.`

Kalank also starring Sanjay Dutt, Aditya Roy Kapur, Alia Bhatt, Sonakshi Sinha, and Madhuri Dixit is slated to release on 17th April 2019.