What songs did Mongolian children sing at the opening ceremony of the World Chorus Competition?
The first song of the best answer is "Happy Lamb", composed by the lead singer Nachug Tongel Ji of Erdenbart, who sang the colorful voice of Oscar Uzhtunashun of Shaoxing Haiyan Art Center of Balhu Children's Choir.
The second song is a little boy named Wu, and his lead song is Ejina Banner in a Dream. Lyrics: Rabuge Su Rong, composition: Tagus Girigara.