I never cease to be amazed by the programs that Carnegie Hall offers each season (which runs fall-spring).
If you love adult music, I advise visitors to NYC to check out the program. Or, if you request, they will mail it. The best part is that the tickets are not expensive. It's not like going to the opera.
If I lived closer to NYC, we'd get a 10-night subscription.
Their 2019-2020 Program. Remarkable. Nowhere else in the world.