I didn't notice that the start portion of the recording is .......
the recording-conversion system of my electric piano was broken.
I'll record it again maybe.
Things on the surface of water are changing;
The surface of water are changing after a drop falls; or
Something on the bottom of water moves.
I felt whole tones are not clear but rather dim.
artwork
https://pixabay.com/photos/abstract-macro-water-drops-bokeh-2512412/
