God, so many small, intimate gigs like the ones you mention, CupOfTea, would be great to have.

For me, it would be a very young Dan Fogelberg playing at a small community college as a solo act when he was just getting going. Astounding show.

Joni Mitchell jumping onstage and singing a couple of songs at a disco club in Boulder where she was dancing up a storm, way back when.

Small community outdoor festivals are great for this, too. I saw Natalie McMaster about ten years ago on a clear, bug free summer night at a festival in Ohio. There were only about a hundred people there. Just magical.