Mendelssohn called this a spinning song, and the title is the whole argument. The piano never lets the wheel stop. A rapid, even figure turns and turns beneath a melody that rises above it like thread drawn upward from the spindle — not fighting the motion but carried by it. The piece is music about the trance of sustained labor: the body caught in a rhythm that does not pause for reflection, the mind finding its song only inside the constraint of the wheel's constant turning. What stays after the last sound is not a melody but a state — the peculiar alertness of hands that know their task so well they can think about something else while doing it. The harmonic surface shifts and brightens, the texture gathers weight near the end, but the spinning never breaks until the final chord simply stops the machine. Here Mendelssohn finds something intimate and mechanical: the dignity and the captivity of repetition itself, where freedom is not escape from the pattern but the melody you manage to sing while the pattern holds you.