This one needs a lot of work, but for now, this is Chopin's Etude No. 3, Tristesse. I will upload a better recording after some practice.
As described under a photo on the home page, I composed a choral arrangement of Tristesse for my high school senior project. I am not a conductor or a music teacher, but I did my best to teach the arrangement to my classmates in chorale, and then we performed the piece at the school recital at the end of the year. I am incredibly proud of all the progress we made, and deeply grateful to my classmates for how hard they worked on my behalf.