Just ignore Louis. There's absolutely no reason why to even consider him worthy of replying to!
As far as normalizing goes: It was always my thinking that what normalizing does is to spot the loudest spot, get it to 0 db and the rest relatively louder... Which is not destroying anything. If anything it's like tempering the gain, until you reach the same result, but just easier.
Recently people have been advising me that if a work is to go to a professional mastering level, then I should leave the normalizing bit to them (who might do it in a different way).
If you consider that a 9 minute classical work may, after all, not have a 0db point (loudest part), then it seems very sane to NOT normalize anything. This lovely intermezzo by Brahms has very few loud points, none of which is one that would "qualify" exactly for reaching that 0db point. In which case it seems to me that you did turn some low volumes into a bit louder than it should be.
But that's all irrelevant really, especially for a home recording...
I won't go into any details about your performance, unless you want me to. Are you looking for feedback of your performance, or just sharing?
In any case I will admit that I enjoyed your performance and had it playing twice (and now on the third time listening in a row).