Listen to Saghan Gahan Raatri online. Saghan Gahan Raatri is a Bengali language song and is sung by Hemanta Kumar Mukhopadhyay. Saghan Gahan Raatri, from the album All Time Greats - Hemanta Mukherjee, was released in the year 1980. The duration of the song is 3:22. Download Bengali songs online from JioSaavn.