Listen to Oru Thai Maasam online. Oru Thai Maasam is a Tamil language song and is sung by Shankar Ganesh and S. Janaki. Oru Thai Maasam, from the album S. Janaki Thirai Mutthukkal, was released in the year 2002. The duration of the song is 3:11. Download Tamil songs online from JioSaavn.