You were recently gifted a new music box, and inside contained a beautiful ballerina posing in arabesque pose that twirls every time you turn the key, and plays a smoothing musical piece.

However recently when you turn the key the ballerina seemingly stops moving, and every day when you go to check the music box the ballerina makes different poses. Strange. Isn’t one of her feet attached to the music box? Why is that the case?