Finally I have some time to answer...
It is hard to say whether I am professional pianist anymore... All I can say, I was trained as one and for many years was actively performing. This recording was a part of my DMA project. Sometimes I don't practice for over a year, and then schedule a concert just to have a motivation to get back to the shape.
Yes, sorry for the typo, of course, it is 1923. I will change it.
Since I wrote quite a big essay on the topic, I will try to keep it short and concise. For me Feinberg is one of those artists when they can say: "There is Feinberg... and all the rest". There were very few such artists--Rachmaninov, Sofronitsky, Schnabel, Richter. He was absolutely unique artist, somebody who could toss a series of concerts, which included Beethoven 32 Sonatas, entire Bach WTK, and complete Scriabin Sonatas. Mind you, all of that in period of two months!!!
Feinberg was one of the first Goldenweiser's students, incredibly cultural man, phylosofer, author of many serious essays about music and aesthetics. In my mind his book "Pianism as an Art" still remains one of the most important manuscripts on performance and technique.
His knowledge of art, literature, philosophy was monumental, as was his approach to music and repertoire--he had in his active repertoire entire klavier Bach, entire Chopin, Schumann, Scriabin, besides others.
Unfortunately, because of many reasons, including situation in Stalinist Russia, as well as his kindness, modesty, and rejection of any self promotion he never become famous or popular. Feinberg was one of those artists who found themselves content with creation of art for sake of Art.
His mastery as a pianist was phenomenal. When you listen to his recordings keep in mind, all of them are from take, with no editing, made in his older age. He had very specific nervousness in performance--nobody came even close to his performance of Scriabin--his divine interpretations of Sonata-Fantasy, Sonata no.2, 4, and satanic no.5.
His Bach is unique in its rather romantic interpretation, but with absolutely clear lines and crystal clear polyphony.
I could go on and on about this dear to my heart artist, but it is like to explain taste of good wine over a phone. Just get his recordings, search youtube and hope you will enjoy him as much as I do.