Polyphonist - Etude After Chopin Prelude Op. 28 No. 20 (imitation of Chopin Etude Op. 25 No. 12)

EDIT January 15th, 2021: The author of this etude has now been discovered to be Piano World forum user Polyphonist, who made this post () sharing his etude, along with a link to the sheet music and a recording (the latter of which appears to be now unavailable unfortunately, although commenters on the post have pointed out it may just be a MIDI anyways). Very special thanks to YouTube user XMVZiron for providing me this information! IMPORTANT DISCLAIMER: This is not my own transcription! Recently I discovered a pdf of what was supposedly a Chopin combination etude, which can be easily found by Googling “chopin combination etude“, and which can be accessed here: This document is quite enigmatic. The PDF is simply titled “Etude“, without any mention of the pieces it is modelled after (for the record, it is modelled after Op. 28 No. 20, while masquer