Listen to Kul Nai Sima Nai online. Kul Nai Sima Nai is a Bengali language song and is sung by Gopa Trivedi. Kul Nai Sima Nai, from the album Sob Loke Koy, was released in the year 2018. The duration of the song is 6:16. Download Bengali songs online from JioSaavn.