Listen to Unnai Yenni Vaazhum online. Unnai Yenni Vaazhum is a Tamil language song and is sung by Gopal and Febi Mani. Unnai Yenni Vaazhum, from the album Unnakkum Ennakkum Kalyanam, was released in the year 1998. The duration of the song is 4:58. Download Tamil songs online from JioSaavn.