Listen to Oi Mahasindhur Opar Theke online. Oi Mahasindhur Opar Theke is a Bengali language song and is sung by Manabendra Mukherjee. Oi Mahasindhur Opar Theke, from the album All Time Greats - Manabendra Mukherjee, was released in the year 1973. The duration of the song is 3:47. Download Bengali songs online from JioSaavn.