Your ears take in more information than what your brain processes into an experience. Which parts of the data that you pick up on become habitually prioritized and remembered, so when you experience the thing again, you more quickly prioritize the what you take in, and perhaps fill in some gaps. Memory and recognition work largely through chaining across all of the senses - which is often when why certain smells help trigger old memories. In an article I have floating around here, even professional wine tasters were not able to tell the difference between red and white wines when all of the wines are dyed red, presumably because dying the wine red interferes with their memory chaining and associations.
Thus, due to the overwhelming amount of data your ears take in and your brains natural process for prioritizing that data into an experience and its reliance on chained memory associations, a blind test will never be an accurate tool for identifying finer characteristics of a sound, simply because the data that pertains to those distinctions may not even be cognized to begin with. I will say it may be refreshing in another sense to be able to hear things out of context & w/o the associations - to be able to hear them in a fresh way - since there is some data that is habitually overlooked, just as some is habitually recognized! It will only be fresh the first time however, as you will begin to do the same thing with the new samples.
Obviously, the data has to be there in the first place to be cognized, so you will never hear a saxophone instead of a mini moog or something like that, but someone who is very familiar with the way a mini moog sounds might have an increased ability to discern it from an odyssey or the mini moog V for instance, although as many an anecdote goes, maybe they will not! Over all, the science of perception and cognition as it pertains to aesthetics is an extremely complex and fascinating topic.
As a final note, remember the video with the piano that someone programed to speak? Try watching it with the suggested words, and try listening to it without seeing the suggested words. If you've found that you've lost the ability to make out what the piano is "saying," you have a good example of the power of linked associations across multiple senses affecting the way you hear and process data in the respective contexts.
This looks like a psychotropic reaction. No wonder it's so popular...