"It is wartime in German-occupied Poland. A mother hides with her five-year-old daughter, a musical prodigy whose slightest sound may cost them their lives. The girl is forbidden from making a sound, so the yellow bird sings. He sings whatever the girl composes in her head: high-pitched trills of piccolo; low-throated growls of contrabassoon. Music helps the flowers bloom. When the daisies grow abundant, the bird weaves a garland for the girl to wear...