Listen to Rangbaj Koiran online. Rangbaj Koiran is a Bhojpuri language song and is sung by Ashutosh Rana and Nisha Gupta. Rangbaj Koiran, from the album Rangbaj Koiran, was released in the year 2022. The duration of the song is 3:35. Download Bhojpuri songs online from JioSaavn.