Heh, funnily enough
i started to describe orchestral compositions like you did in a similar thread (talking about "epic" and instrumental composition).
Certainly influenced by common paterns used to describe classical music...
Btw, when you said "People separate pieces by eras or by structure or by instruments or by compositional devices used", it really look like some kind of "sub-genres" (or whatever word we use to describe it) classification to me.
There's differences in classical composition and a lot of them share the same components, making them fill in many different "groups".
The fact that classical music is an old medium that grew slowly could make it harder to classify
in a modern way, but there's certainly different genres out there. While writing about it, i even start to be confident that back in their time, some "classical" compositors were thinking about some sub-genres and even arguing about them ^^.
By the way, i just started searching a little after writing this and i fond some lists... funnily enough, it's the first time i found something on the french wiki that is not clearly on the english wiki :
And some others i found in the regular english web :
Even
Freewave's good old RYM list have some classical genres (~11) and "modern" classical genres (~12), and others should have done advanced ones.
Welp, like some of my other recent "researches", i just learned that i don't know that much and should study a lot more

. Not very surprising, knowing we speak about the wide "classical music" topic.
Edit :
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Callenby wrote:Mijka wrote:Uh, sure, I guess. There's not a whole lot else going on here.
I feel like i hijacked the main discussion now, maybe i did read the topic diagonally... shame on me.
I'd like to add my advice on the "authentic performance" topic you brought (wow, is this even correct english ? Feel free to correct me if needed ~~).
In a odd way, i can see a link between your question and an other topic on wich i did some "researches" recently... i am currently interested in mixing some brony songs to make an "early 2014" mixtape for Radiobrony.fr, and i started to study a bit about DJ-ing and stuff... there's the link : it's a widely accepted fact in the "mixing" community that performing a good
live mix requires quite different skills (should i say "more" ?) than doing a regular mixtape at home/studio.
Looks like a very regular trend.
The main difference being the difficulty to do a live performance : a good one show all the experience and preparation time the performer had behind him.
On the other hand, the home/studio mixer requires some "mixing" skill too, but the "amazing-ness" is different, because we know that the person who made this track had a lot of time to make it, and maybe this extra time helped him/her to polish the track... and as the same time the polishing could have removed something that made live music sound crisp and warm (you know, the "little things" that make 2 performers give a different... performance for the exact same song, for example i even heard some people are collecting different performances of Vivaldi's "The Four Seasons" ballet)
It could be like judging two sculptures, one done during a short live-performance and the other done after months / years of work. Definitely, the two productions could feel equally awesome, but in different ways.
I found recently a picture on this topic that shows some of my feelings about this :

Back to classical composition, i don't think "live" performance will ever disappear. There's room for "more" than lives and recorded ones, but i don't know where's the limit between a mainly-live performance and a mainly-edited performance.