Listen to Nil Akasher online. Nil Akasher is a Bengali language song and is sung by Indira Banerjee, Swapan Saha, Pramita Mallick and Sreenanda Mukhopadyay. Nil Akasher, from the album Asim Akashe, was released in the year 2008. The duration of the song is 3:39. Download Bengali songs online from JioSaavn.