another etude that I just know is not an etude

I don't know how I missed this one - but I really Believe that:


Chopin's  Etude in F m Opus 10 No. 9


belongs on the list of stidh's Great Discovery that
claims that Chopin perhaps included in his Book of Etudes a
few Etudes that really do not belong with Real
Etudes.


But then what do I know.


Still - if I found just one more...








then there could be Others.