Allegro moderato, 2/4 time. The left hand repeats chromatic movements, and its light staccato evokes the image of a running locomotive. Throughout the piece, the sound of the black keys distinctively contributes to its lightness and cheerfulness. It is advisable to produce the black key notes with a light and resonant quality. From measure 17, the tempo gains a slight momentum with piu mosso. From measure 33, the tempo further accelerates with ancora piu mosso. From the ff section, the locomotive accelerates, and it is desirable to express this energetic state. For the final rall., carefully conclude the piece with attention to slurred staccato, as if the locomotive is gradually coming to a stop.