These posts reveal the bias in Audiogon towards classical and acoustic music. Now, that is not to attack the style of music nor those who love it, but it does reveal the lack of a baseline that serves as a foundation for much of the discussions on Audiogon.
Person A: "What do you want to eat?"
Person B: "Apple Pie."
Person A: "For dinner?"
Person B: "Oh, I thought we were talking about dessert."
The point being, there is a huge difference between classical and other forms of acoustic music that is intended primarily to be unamplified and rock/pop/most jazz etc. where the mics, amps, and speakers are PART of of the instrument.
I'm sure different systems do better with one or the other.
Point being, I don't think there is a singular sound of live music. It depends on genre. We each tune our systems to sound best with our chose genres. At least that seems logical to me.