Listen to O Kalar Bnashire online. O Kalar Bnashire is a Bengali language song and is sung by Sujata Sarkar and Prasanta Chowdhury. O Kalar Bnashire, from the album Amay Tumi Je Bhalobesechho, was released in the year 1991. The duration of the song is 5:28. Download Bengali songs online from JioSaavn.