Listen to Mast Shahar Hai Kaashi online. Mast Shahar Hai Kaashi is a Bhojpuri language song and is sung by Niraj Singh, Anmol Rucha and Priyanka. Mast Shahar Hai Kaashi, from the album Mahashivratri Special Bhojpuri Devotional Songs, was released in the year 2019. The duration of the song is 7:45. Download Bhojpuri songs online from JioSaavn.