Listen to Naan Unthan Thaayaga online. Naan Unthan Thaayaga is a Tamil language song and is sung by S. Janaki and Ilaiyaraaja. Naan Unthan Thaayaga, from the album Ullasapparavaigal, was released in the year 1979. The duration of the song is 4:26. Download Tamil songs online from JioSaavn.