《鸟儿歌唱的声音》介绍了中国传统民族乐器——二胡的构造和制作方法。玲珑和爷爷住在一个充满鸟语花香的村庄里，但是每到冬日，树木的叶子落了，美丽的鸟儿也不再歌唱，玲珑特别怀念树林里叶子的沙沙声，还有鸟儿的歌唱声，她觉得那是大自然的旋律。为了能让玲珑一直听到这美妙的音乐，爷爷为她做了一把二胡，据说它能模仿多种声音，包括鸟儿歌唱的声音。| The Sound of Birds Singing introduces the structures and making method of erhu, a Chinese traditional music instrument. Linglong and her grandfather live in a village full of birds and flowers. But in the winter, the leaves of trees fallen down and the birds flew away. Linglong wanted to hear birds and rustling leaves, she thought that is the music of nature. In order to let Linglong heard the music all the time, her grandfather made an erhu which imitate many sounds from nature as well as convey the sound of birds singing.