Hi alonsovich,
To tell the truth, I'm not a Bartok fan (I play none of his music), but I found this piece somewhat uncharacteristic of his idiom. It is almost impressionistic and even gives a slight nod to Scriabin at times. It's a wonderful etude. As importantly, your playing was superb--excellent clarity of line throughout and very expressive. Your command of your well-developed technique totally serves your musical intentions thoughout. Congratulations!
I find it surprising that you received no comments on this recording when you first posted it. If nothing else, I hope more people will listen to your performance now, who perhaps missed it before.