Listen to O Mon Guner Bhai online. O Mon Guner Bhai is a Bengali language song and is sung by Sumangal Khyapa and Sumangal Majumdar. O Mon Guner Bhai, from the album Bhalobasar Kangal, was released in the year 2016. The duration of the song is 6:18. Download Bengali songs online from JioSaavn.