Listen to Oi Mahamanab Aase online. Oi Mahamanab Aase is a Bengali language song and is sung by Suman Gupta. Oi Mahamanab Aase, from the album Praner Gaane Rabindranath, was released in the year 2021. The duration of the song is 2:27. Download Bengali songs online from JioSaavn.