Listen to Koyal Bole Ku Ku Ku online. Koyal Bole Ku Ku Ku is a Bhojpuri language song and is sung by Ajay Prasanna and Guddu Rangila. Koyal Bole Ku Ku Ku, from the album Jai Ho Devi Ji, was released in the year 2005. The duration of the song is 6:14. Download Bhojpuri songs online from JioSaavn.