Listen to Khan Sir Sabse Mahan Sir online. Khan Sir Sabse Mahan Sir is a Bhojpuri language song and is sung by Alok Goswami. Khan Sir Sabse Mahan Sir, from the album Khan Sir Sabse Mahan Sir, was released in the year 2021. The duration of the song is 3:25. Download Bhojpuri songs online from JioSaavn.