A new song titled 'Har Har Gange' from Shahid Kapoor and Shraddha Kapoor starrer 'Batti Gul Meter Chalu' has been released. Sung by Arijit Singh, the song has been composed by Sachet-Parampara and written by Siddharth-Garima. The film has been directed by Shree Narayan Singh, who had earlier directed 'Toilet- Ek Prem Katha' and will release on September 21.