Listen to Oru Naal Unnodu online. Oru Naal Unnodu is a Tamil language song and is sung by S.P. Balasubrahmanyam and Janaki. Oru Naal Unnodu, from the album Uravaadum Nenjam, was released in the year 1976. The duration of the song is 4:12. Download Tamil songs online from JioSaavn.