Aino
Väinö, son of Luonnotar, wishes to experience mortal pleasures and meets Aino, who personifies nature. They agree to marry, but Aino’s brother Jouko opposes the match and challenges Väinö to a singing contest, which he loses. During the wedding preparations Väinö makes a kantele from a birch tree. Aino disappears and, in the final scene, dives into the sea as water nymphs sing.