"Capricious" refers to something whimsical, unpredictable, or constantly changing. It can describe not only a person's temperament, but also things such as the weather or fate - things that shift unexpectedly and resist prediction.
In this work, however, "capricious" means more than simple unpredictability. Virtuosic passages suddenly appear as though straying from the natural flow of the main theme; moments of silence emerge unexpectedly; and the tonal center shifts from one key to another, continually transforming the music's expression. At times, the piece may seem restless or lacking in unity, yet I believe it is precisely this sense of fluctuation and instability that gives the work its unique charm.
Although the music is constantly changing, it somehow remains unified as a whole. In that way, it almost resembles human emotion itself. In the middle section, in contrast to the whimsical character heard earlier, a quiet and contemplative atmosphere unfolds. It may evoke the feeling of becoming immersed in memories, confronting emotions rising from deep within the heart, or simply reflecting alone in solitude.
In the latter half, the music gradually returns to a more active character. The technical passages intensify with growing momentum, leading to a brilliant and energetic conclusion. I hope listeners will sense the vitality and dynamism that lie within the ever-changing expressions of this piece.

(Yuichi Abe)