Listen to Biros Din, Birol Kaj online. Biros Din, Birol Kaj is a Bengali language song and is sung by Supriyo Sudip Banerjee, Pratap Mukherjee and Abhijit Mukherjee. Biros Din, Birol Kaj, from the album Kalo Horin Chokh (Part-2), was released in the year 2008. The duration of the song is 4:22. Download Bengali songs online from JioSaavn.