Listen to Mani Osai online. Mani Osai is a Tamil language song and is sung by M.S. Viswanathan, S.P. Balasubrahmanyam and S. Janaki. Mani Osai, from the album Naalum Therindhavan, was released in the year 2024. The duration of the song is 4:36. Download Tamil songs online from JioSaavn.