Listen to Naan Unthan Thaayaga online. Naan Unthan Thaayaga is a Tamil language song and is sung by Ilaiyaraaja and S. Janaki. Naan Unthan Thaayaga, from the album Guru Ullaasapparavaigal Sikappu Rojakkal, was released in the year 1980. The duration of the song is 4:28. Download Tamil songs online from JioSaavn.