Listen to Kosto Kore Sajai Koto online. Kosto Kore Sajai Koto is a Bengali language song and is sung by Swapna Chakraborty and Sandip Bhadra. Kosto Kore Sajai Koto, from the album Bengali Folk Super Hit Songs, was released in the year 2008. The duration of the song is 4:56. Download Bengali songs online from JioSaavn.