Listen to Unai Thaan Nitham online. Unai Thaan Nitham is a Tamil language song and is sung by S. P. Balasubrahmanyam and S. Janaki. Unai Thaan Nitham, from the album Mappillai, was released in the year 1989. The duration of the song is 4:23. Download Tamil songs online from JioSaavn.