Listen to Uper Sou Sawan online. Uper Sou Sawan is a Maithili language song and is sung by Ram Babu, Suresh and Rachna. Uper Sou Sawan, from the album Mp3 Vol. 1, was released in the year 2008. The duration of the song is 5:23. Download Maithili songs online from JioSaavn.