The answer to the mystery of a small shape but a beautiful sound (hit a toy) is the music box.

When we were children, we all wished to have a music box, a small one. Every note played seemed to open up a different world, which was so wonderful. When the familiar melody plays again, the forgotten memories emerge again and are played back over and over again, reminding us of the most coveted time in our childhood and tapping the depths of our hearts.

You see, the music box is a small shape, and it can make sounds and sing beautiful music. Doesn’t it fit in with the saying on this riddle that “a small shape can make beautiful sounds?” ", and it also hints that it is a toy, so it is a music box, which can also be called a music box.