Hi Emill,
Well, yes, I too hear a distinct difference in the 2013 rendition of the etude. It's definitely more expressive than the 2012 version. One might surmise that Enzo's approach to pianism has not only improved over the past year, but it is more polished and expressive. Or, it's true to say too that fine pianists seldom play a piece exactly the same way twice. But far more importantly, there is nothing quite like love which infuses more poetry and feeling into a performance. I actually prefer this more recent performance to the older one. In the romantic repertoire, revealing the emotional content of the music is the most important element of performance. Projecting this to an audience is not a matter of technique; rather, because it's about love, it comes straight from the heart.
David