This is a musical wall where little people live.

When stamps of various shapes such as mushrooms, sheep barns, or long sticks of ice are attached to the wall, these objects appear in the world of the little people. The little people notice these and start jumping onto them.

Depending on the stamp, the little people will slide, jump, or climb on top of them. If the stamp is removed, the stamp in the world of the little people will remain for a moment longer before disappearing.

Attach various stamps to the wall, and the little people will play with delight.

Seeds with smiley faces come falling down from above. When the seeds hit the stamps, various notes in different pitches play depending on the type and position of the stamp they hit, eventually creating music.