Listen to Ratno Dangar Biler online. Ratno Dangar Biler is a Bengali language song and is sung by Pashupati Biswas and Aswini Gosai. Ratno Dangar Biler, from the album Yugawatar Sri Sri Harichand, was released in the year 2007. The duration of the song is 3:21. Download Bengali songs online from JioSaavn.