This work is characteristic of Mendelssohn. It progresses steadily in tempo, like music that never ceases. The most important aspect of this movement is to maintain the Vivace. Many people misunderstand Vivace to mean "at a fast tempo," but that is not its meaning. Vivace means "lively" in English. It does not necessarily need to be fast.

When observing videos of this piece being performed, many individuals play it delicately and lightly. While this is not inherently wrong, the sense of Vivace is often lacking. As you will clearly see when examining the score, the transitions in dynamics, such as from p to f and f to p, occur in very short durations. These abrupt dynamic changes are precisely the essence of this piece, and ultimately contribute to the Vivace.

The articulation should primarily be staccato. Although staccato markings are sparse, it can be considered an almost implicit understanding. In measures 3-4, both hands should play with staccato as short as possible. The same applies to passages with continuous sixteenth notes, such as in measures 21-22. This piece requires a lively vitality, even while maintaining a light touch.