3 that I've already learned, I will waste no more time trying to learn anymore.
Revolutionary- up to speed, but I hate that I absolutely CANNOT get 100% accuracy every time I attempt to play it, always half a dozen or so mistakes.
Ocean- Close-ish to final speed, needs more practice. Also the non-arpeggio sections have this melody I never attempted to bring out.
Cello- Not really technically difficult relative to other Chopin Etudes, but musically yes. Need to work on phrasing and evenness, and not overpowering the actual melody.
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Yes, I have this sort of addiction to technically challenging pieces because I like challenges. Half of the reason why I started playing piano is because I was bored. Being a teenager in high school, I was naturally drawn to video games. The problem was, they're really detrimental to your mental state if overplayed. So I took up piano (ironically, which still slightly affected my studies).
The other thing is that I get this really demotivational feeling that takes over me if I don't try to learn something at least somewhat difficult. There is an evil voice inside my head that goes "there are 8 year olds that know more advanced pieces than you, you suck". I know piano is development, and one day if I keep at it, I will reach an advanced level, but the voice still overpowers me.
It may seem like I treat piano as a video game, but I do really enjoy the art. It's changed me. I used to listen to modern music, rock, etc, but somehow I've become a classical (including romantic era) purist. It's like that the music is so good that anything else is crap compared to it. I have never gotten chills before when listening to music. Piano sort of changed that.
I am sort of rambling now, so to cut to the chase, I am both largely drawn to a piece because of its perceived technical challenge (unfortunately), and also largely drawn to its musical value.