To provide a dance doll which can quickly move the legs up and down.

This is a dance doll which moves the left/right legs up and down by magnetic force interacting between a coil and a magnetic substance by controlling electric current flowing in the coil. A question is given to a player by moving the left/right legs up and down at a specific rhythm, judges whether outer sound by the player fits to the specific rhythm or not, and indicates the judgement result by an action.