I thought of a category recently while listening to a few different pieces, that of the "timeless" work. This isn't in the sense that people mean when they are just saying it is very good, but that the piece literally sounds like it could have been written in almost any of the post-renaissance periods of classical music (300 years ago or 3 years ago, who knows which?). Some pieces that come to mind are:
Vivaldi's Summer, 3rd movement. And Spring, 1st movement.
Bach's Chaconne for solo violin from Partita 2
Bach's Art of Fugue
Beethoven's Grosse Fuge
Do you know any other pieces that seem to fall within this category? Is this a sign that a composer has "ascended beyond their era?" Do eras even exist? What is the meaning of life?

Please help.

I didn't find the right solution from the Internet.

https://www.talkclassical.com/49556-cla … eless.html
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