This voltaic soundtrack, as befitting a film about the crippling electricity crisis in contemporary India as any other, is energised by uptempo gems and heart-rending paeans alike. The exuberantly Hinglish "Gold Tamba" and the genre-melding "Hard Hard" float amid a current of catchy choruses. Arijit Singh works his characteristically earnest charm on the soaring "Har Har Gange", a symphonic song of praise dedicated to the Ganges river. There are two versions of "Dekhte Dekhte”—one with Rahat Fateh Ali Khan, the other with Atif Aslam—each with their singers' idiosyncrasies to recommend them.