For an example of #1 at a solstice, I think The Next Right Thing at the 2023 Boston one went pretty well. You can hear as the audience figures it out and starts singing along. The original version is much more complicated, and this version I simplified intentionally for the event.
For #2, here’s Song of Artesian Water where you can hear people joining in progressively over the course of the song.
For #3, here’s Chasing Patterns, which is also a good bit of #1.
For an example of #1 at a solstice, I think The Next Right Thing at the 2023 Boston one went pretty well. You can hear as the audience figures it out and starts singing along. The original version is much more complicated, and this version I simplified intentionally for the event.
For #2, here’s Song of Artesian Water where you can hear people joining in progressively over the course of the song.
For #3, here’s Chasing Patterns, which is also a good bit of #1.