Since it is a marionette, it would be ideal to convey the impression of it dancing with its legs dangling. To achieve a random "swinging sensation" akin to a puppet's legs, immediately relax after playing the dotted eighth note, allowing the sustained sound to decay (decrescendo). As the left and right hands play alternately, it is enjoyable to fully embody the marionette by performing with the sensation as if your left and right arms have become the puppet's left and right legs. Although the marionette unfolds a whimsical melody, rising and falling without a specific destination, from measure 15, a crescendo leads towards the 'E' with a sforzando in measure 17, creating a climax. Let it resonate grandly.