The filmmaker effectively uses sound to enhance the narrative by juxtaposing playful music during the children's kickball game with the sudden silence when the purple snow begins to fall. This shift in sound underscores the moment's significance and creates a sense of wonder and mystery as the children's joyous play is interrupted. The soft music that swells when the child reaches out to catch a snowflake mirrors her awe and emphasizes the magical quality of the scene.
To enhance the mood even further, the filmmaker could incorporate whimsical sounds, like chimes or light bells, as the snowflakes fall, which would accentuate the enchanting and surreal atmosphere of the purple snow and amplify the children's sense of wonder.