Listen to Viral Pattal (Duet) online. Viral Pattal (Duet) is a Tamil language song and is sung by Deva, S.P. Balasubrahmanyam and K. S. Chithra. Viral Pattal (Duet), from the album Chithra Hits, was released in the year 2007. The duration of the song is 4:53. Download Tamil songs online from JioSaavn.