Listen to O Bholanath Ar Koto Raat online. O Bholanath Ar Koto Raat is a Bengali language song and is sung by Swapna Biswas. O Bholanath Ar Koto Raat, from the album O Bholanath Ar Koto Raat, was released in the year 2020. The duration of the song is 4:35. Download Bengali songs online from JioSaavn.