Listen to Unnai Oru Kelvi online. Unnai Oru Kelvi is a Tamil language song and is sung by K.J. Yesudas and K. S. Chithra. Unnai Oru Kelvi, from the album Thaali Kattiya Raasa, was released in the year 1992. The duration of the song is 4:30. Download Tamil songs online from JioSaavn.