Listen to Koto Ar Dukkho Dibi online. Koto Ar Dukkho Dibi is a Bengali language song and is sung by Uttor Deb. Koto Ar Dukkho Dibi, from the album Bisshojure Birajman, was released in the year 2018. The duration of the song is 4:51. Download Bengali songs online from JioSaavn.