Listen to Oi Neel Akasher Kole online. Oi Neel Akasher Kole is a Bengali language song and is sung by Sandhya Mukherjee. Oi Neel Akasher Kole, from the album Nishi Mrigaya, was released in the year 1975. The duration of the song is 4:19. Download Bengali songs online from JioSaavn.