Mei-Shun found that “La Cinquantaine” and “A Maiden’s Prayer” resemble each other; simple, famous, 3 sharps for the former at maximum while 3 flats the latter. As might be mentioned before, her concentration would wonder when she does not feel so good, leading to mistakes in fingers. Such weird sound becomes ear-catching on both scores, gives the player sad mood. The same applies vice versa.