Funny this thread should pop up just now. One of my highlights from the Portsmouth Maritime Folk Festival (Portsmouth, New Hampshire) happened Sunday morning before festival events started for the day. There was a young woman (late teens, early 20s) singing beautifully on a street corner as I walked by looking for a program. When I walked past again, she'd been joined by a slightly older woman, and they were singing some lovely harmonies. They graciously allowed me to sing along with them, and the second woman started Anderson's Coast, which the first woman wasn't familiar with, but I was. We must have sounded alright, because people were stopping to listen, including a decently-sized group of young girls dressed up in fairy wings.