Listen to Bol Na Kab Hoi online. Bol Na Kab Hoi is a Bhojpuri language song and is sung by Rajnish Kumar. Bol Na Kab Hoi, from the album A Malbhog Baba, was released in the year 2014. The duration of the song is 4:34. Download Bhojpuri songs online from JioSaavn.