Listen to Oru Thai Maasam - 1 online. Oru Thai Maasam - 1 is a Tamil language song and is sung by S. Janaki and Sankar-Ganesh. Oru Thai Maasam - 1, from the album Vandichakkaram, was released in the year 1980. The duration of the song is 3:15. Download Tamil songs online from JioSaavn.