Kuroishi Hitomi composed this music with photographs of the museum environs placed nearby and the picture book sitting on the piano in front of her. She composed each melody based on the natural vibrations inherent in each instrument, exploring themes of tranquility and light, beauty and hospitality. The result is a wide range of instruments woven beautifully into a sonic tapestry, with a unique sense of harmony and coordination. For example, in one scene a harp represents light, an erhu (a Chinese stringed instrument) the wind, a cello the earth, an ocarina the rustling of leaves, and a bianzhong (a Chinese instrument featuring bells played with a mallet) water, and the ensemble draws the listener into the world of Yo's picture book.
The theme songs “Legend of Peach Valley” and “Place of Miracle's, featuring lyrics composed by Yoh Shomei, are irresistibly hummable and have become favorite selections for choral groups.