The most perplexing issue with this prelude is the tempo. The composer's score indicates Andante, eighth note = 58. When actually played at eighth note = 58, it becomes clear that it is quite slow. However, since the time signature is 6/8, it is a compound duple meter.

Indeed, the tempos in performance videos vary greatly, with some videos featuring considerably faster tempos. There were extreme differences among pianists, such as eighth note = 150, eighth note = 100, and eighth note = 50. It was also conceivable that the eighth note notation might have been mistaken for a dotted quarter note (including printing errors, editing errors, or misreadings by the pianist).

However, if this piece is played too fast, the modulations in the middle section (from measure 9 onwards) become too abrupt and intense, which also sounds unnatural. On the other hand, if played strictly at the prescribed eighth note = 58, the tempo is so slow that one might feel it should be explicitly marked Adagio, even to the extent of questioning the necessity of a compound meter.

In my personal opinion, I believe eighth note = 100 would be just right. Furthermore, as the piece progresses, there are passages with ornaments and triplets that require more time. Therefore, instead of maintaining a strict metronomic tempo throughout, it is advisable to take time flexibly, naturally, and freely.