Listen to Doctorwa Kailkau Patna Refar online. Doctorwa Kailkau Patna Refar is a Bhojpuri language song and is sung by Sonu Singer Yadav. Doctorwa Kailkau Patna Refar, from the album Doctorwa Kailkau Patna Refar, was released in the year 2022. The duration of the song is 4:15. Download Bhojpuri songs online from JioSaavn.