Listen to Oi Mahasindur Opar online. Oi Mahasindur Opar is a Bengali language song and is sung by Bibhas Chattopadhyay. Oi Mahasindur Opar, from the album Bromhosangeet - Vol 2, was released in the year 2023. The duration of the song is 6:32. Download Bengali songs online from JioSaavn.