Sorrow and Sadness Great Job
The song itself is good already in the anime, but you've done a great job in the remake and adding your own stuff. What I like most is that you slowed the pace even more.
In my opinion there is only a couple of things to note, first one is that the piano is probably too quiet, and second that there is a point where I felt that you were speeding up a bit. Other than that excellent job.