Listen to Oi Sä Riemuisa online. Oi Sä Riemuisa is a Finnish language song and is sung by Jarmo Lehto, Jaakko Ryhänen, Esa Ruuttunen, Hanna-Leena Haapamäki, Ari Grönthal, Pertti Eerola and Viipurin lauluveikot. Oi Sä Riemuisa, from the album Adventin Aikaa, was released in the year 2015. The duration of the song is 1:45. Download Finnish songs online from JioSaavn.