The soundtrack has constantly calling frogs, singing birds, and buzzing insects. A servant girl, Mui, has an innocent nature and is fascinated by the life she sees around her, which she enjoys watching. When she sees a frog at her wash basin, she just splashes water on it to encourage it to hop away. We see her watching several frogs and toads in the courtyard of a house that is supposed to be in Vietnam, but the movie was filmed entirely in France. This might explain why some of the frogs look like pet store species. One looks like a green treefrog and another looks like a gray treefrog, both from North America. This makes me wonder if some of the frog calling sound effects are also not from Vietnamese species, especially since some of them sound a lot like Puerto Rican Coqui frogs.