When I cut the tip of my fifth finger of my right hand, I practiced the pieces. I touched and gripped something, which was unable to be seen and not good, and I did not washed my hands, and I unintentionally cut the finger and blood dropped, it took about two months to use my right hand. After that I wash my hands with water and salt whenever I touch something not good.
You might think that it is difficult to play a piece only by one's left hand without one's right hand. But I think it is easier because it is not necessary to adjust timings of my left and right hands.
I played the pieces by my both hands but I like playing them only by my left hand because it sounds stronger and more tasty.
Prelude
The piece starts with A major but soon after G# rings. The piece is C# minor, however C# minor doesn't come a lot. Pedal point of G# sounds. The piece ends with C# major = D♭. The next piece, Nocturne is D♭.
I think that the piece is not dark, tragic but also not bright.
Nocturne
The melody starts with La♭ which is half tone below of La of the melody of Prelude.
The range of this piece is wider than Prelude.