I also look for authentic sounds like piano decay and for example listening to Bix Biedebecker picking out a cornet instead of a trumpet.
Why, does it make a difference? The players obviously consider the subtle difference important too.
The genuineness of the sound is important to me and synthetic music just grates. Pressing a keyboard and different sounds coming out at a press of a button does not appeal.
The mix of guitars in Rod Stewart's Mandolin Wind always gets me querying how many guitars are playing in the instrumental sections.
On that note (see, I did it again) a big question to you audiophiles ........ How many guitars (or of that genre) are playing on Mandolin Wind? I say 3 but a guitar playing friend said 4. It has been bugging me for 40 years or so! Please put me out of my misery!
Again I suppose, most music listeners don't care but to some of us such things are dear to our hearts.