Already with tons of hit releases, 2019 has proven to be a blockbuster year for the Bollywood film industry. The latest addition to the list of most anticipated films of the year is Karan Johar's Kalank. The illustrious ensemble of cast includes Madhuri Dixit Nene, Sanjay Dutt, Alia Bhatt, Varun Dhawan, Sonakshi Sinha and Aditya Roy Kapur. With all the big names playing in the film, fans are conflicted regarding which character will take the lead. However, the dilemma comes to an end as sources revealed that the entire plot is entwined around the characters of Roop (Alia) and Zafar (Varun), and all the other iconic names are notably involved in playing vital parts in their lives. Beside the star-studded cast, Kiara Advani will be seen dancing in the song, First Class, along with Varun.The song has been choreographed by Remo D'Souza and composed by Pritam. It has been sung by Arijit Singh.