The original is a two-piano work of the same name, published in 1984. The piano solo version was arranged by the composer himself in later years. Modéré, 6/8 time, C minor. While the 2/4 time signature of the two-piano version was rewritten to 6/8 time in the solo version, and there are differences such as the middle section being 8 measures shorter, it is essentially the same piece. The compositional style of the two-piano version, which primarily features chordal playing, was not retained, and the solo version was changed to a simpler style where the melody is played by the right hand in single notes. Such bold simplification would not be possible in an arrangement by another person, making it a flexible idea characteristic of the composer. Despite its simple structure of repeating a single theme with key changes and a sparse number of notes, it includes challenges such as expressing a melancholic mood and left-hand leaps. The level is approximately that of Czerny's 30 Etudes (Op. 849). Even when approaching the two-piano version, it is advisable to refer to the solo version, where the composer's intentions are clearly expressed.