Listen to Aagaya Gangai - Duet online. Aagaya Gangai - Duet is a Tamil language song and is sung by K.J. Yesudas and S. Janaki. Aagaya Gangai - Duet, from the album Dharma Yuddham, was released in the year 1979. The duration of the song is 4:35. Download Tamil songs online from JioSaavn.