Listen to Bol Kab Karbu online. Bol Kab Karbu is a Bhojpuri language song and is sung by Ramlal Nishad (Rahi Ji) and Indu Singh. Bol Kab Karbu, from the album Paan Thela Wala Raja, was released in the year 2015. The duration of the song is 5:51. Download Bhojpuri songs online from JioSaavn.