Listen to Mahasu Gatha Birsu online. Mahasu Gatha Birsu is a Himachali language song and is sung by Biru Sharma and Om Prakash Sharma. Mahasu Gatha Birsu, from the album Mahasu Gatha Birsu, was released in the year 2025. The duration of the song is 20:43. Download Himachali songs online from JioSaavn.