Listen to Unnai Naan (Duet) online. Unnai Naan (Duet) is a Tamil language song and is sung by Ilaiyaraaja, S.P. Balasubrahmanyam and Asha Bhosle. Unnai Naan (Duet), from the album Kannukoru Vannakili, was released in the year 2022. The duration of the song is 4:33. Download Tamil songs online from JioSaavn.