Premise: "Janam Janam" (English: Life after Life) is a Hindi song from the soundtrack of the 2015 Indian film "Dilwale". The song is written by Amitabh Bhattacharya, composed by Pritam and sung by Arijit Singh. The music video of the song is picturised upon Shah Rukh Khan and Kajol.
Hypothesis: Janam Janam is the most popular Indian song from a film.