Incredible mass singing - Latvian Song festival

the one and only. This you can see just in Baltic states! This is Latvian song Olympic games, just happen every 4 years. There are more then 10 000 singers. The song: "Saule, Pērkons, Daugava". On piano - Martins Brauns. Compositor of the music - Martins Brauns, Lyrics - Rainis