Listen to Ratri Keno Nikosh Kalo online. Ratri Keno Nikosh Kalo is a Bengali language song and is sung by Obaydullah Sayem. Ratri Keno Nikosh Kalo, from the album Nizum Tarar Bone, was released in the year 2017. The duration of the song is 0:45. Download Bengali songs online from JioSaavn.