Listen to Om Sai Namo Namaha online. Om Sai Namo Namaha is a Tamil language song and is sung by Nithyasree Mahadevan. Om Sai Namo Namaha, from the album Sarvan Sai Mayam, was released in the year 2014. The duration of the song is 2:09. Download Tamil songs online from JioSaavn.