Listen to Kosto Soiganw online. Kosto Soiganw is a Kokborok language song and is sung by Bibha, Manudevi, Usha, Gutam and Sanjita. Kosto Soiganw, from the album Oh Naithokti, was released in the year 2010. The duration of the song is 5:35. Download Kokborok songs online from JioSaavn.