What song was sung by Arijit Singh in the 2016 Indian romantic drama film written and directed by Karan Johar?
Channa Mereya: "Channa Mereya" (English: "The light of my soul") is a song from the Indian film "Ae Dil Hai Mushkil". Channa Mereya:  The song is penned by Amitabh Bhattacharya, composed by Pritam and sung by Arijit Singh. Ae Dil Hai Mushkil: Ae Dil Hai Mushkil (English: "This Heart is Complicated" ) is a 2016 Indian romantic drama film written and directed by Karan Johar.
Channa Mereya