Listen to Nai Nai Nai Gurantee online. Nai Nai Nai Gurantee is an Assamese language song and is sung by Mousam Gogoi and Subasana Dutta. Nai Nai Nai Gurantee, from the album Mon Faguni, was released in the year 2019. The duration of the song is 4:22. Download Assamese songs online from JioSaavn.