The Moon Dragons (Dyan Sheldon & Gary Blythe) Paperback / softback

 When a king discovers that there are still singing moon dragons high up on the mountainside, he offers a room full of gold to anyone who can bring one to him. The beautiful dancing dragons only reveal themselves to Alina, a young peasant girl, but she preserves the secret of their whereabouts,  knowing that there are some things far more precious than a room full of gold.