Listen to Mumy Jan Gail Biya online. Mumy Jan Gail Biya is a Bhojpuri language song and is sung by Aman Singh. Mumy Jan Gail Biya, from the album Mummy Jaan Gail Biya, was released in the year 2020. The duration of the song is 5:29. Download Bhojpuri songs online from JioSaavn.