One of the things I'm working on is playing classical music by ear. I've figured easier things like Canon in D, Prelude in C. But I'm trying to work my way up. I'm wondering if it's possible to play by ear more complex classical pieces by artists like Chopin, Liszt and Rachmaninoff. I don't need it to be 100% perfect, but good enough to sound professional. For example, La Campanella by Liszt has a very simple motif that repeats. Most of the difficulty lies in ornamentation. But I don't need to get every note in its right place, because once I understand the theory I can add my own notes or decide on different inversions of chords, voicings, etc. Yes, I could look up the sheet music for a piece, or look at a Synthesia for it, but to me the fun is in figuring it out myself just by sound and theory and developing my ear. I play mostly pop/rock/folk by ear. But when I look at harmonic analysis videos of classical most of the time the theory behind them isn't too hard.
So I'm wondering who plays classical by ear, is there a famous musician out there that does this, or maybe someone in this forum that can vouch for it? I ask because it's always nice to get some inspiration and I can't find anyone on youtube that does this. Well, except for that subway pianist in the first link.