After tickling the funny bones of the viewers with Sanju's first song, Main Badhiya Tu Badhiya, the makers of the film have released the movie's second song - Kar Har Maidan Fateh. The track is an inspirational one, depicting Sanjay Dutt's fight against drugs. Composed by Vikram Montrose, Kar Har Maidan Fateh is sung by Sukhwinder Singh and Shreya Ghoshal.

Showcasing Ranbir Kapoor as Sanjay Dutt after his mother Nargis Dutt's demise, the song presents the emotional journey of the actor trying to overcome his drugs addiction. The inspirational song gives glimpses into the strong emotional connect between Sanjay Dutt and Sunil Dutt played by Paresh Rawal. Touching upon one of the most impactful facades of Sanjay Dutt's life, Kar Har Maidan Fateh showcases the various relationships of the actor with people around him.