Listen to Birbainai Dao Nwngw online. Birbainai Dao Nwngw is an Assamese language song and is sung by Zubeen Garg and Sulekha Basumatary. Birbainai Dao Nwngw, from the album Khalao Khasao, was released in the year 2025. The duration of the song is 5:03. Download Assamese songs online from JioSaavn.