@raidcehlalred - Actually now that I'm jogging some neurons, I think I'm remembering what some friends and I were saying at and right after the show:

That (almost unbelievably) this Ball (of a Clifford variety) was actually them playing it tight and conservative and within the lines. Because everything else was so new and creative - the idea of the festival, the size of the sound system, the Orchestra, Ball Square, the aeronautics - that they didn't want to fuck anything up by exploring too deeply and maybe risking not coming back. They didn't push too far to that "without a net" place because, what if this show was their legacy? It was clearly already their biggest stage. So lets stick to what we know we can land and be confident with. And the result is absolutely supercharged.

But then you can hear during the Harpua all the pent up weirdness and ambience. I truly thought a portal had opened up above us and all the divine energy of the universe was channelling down directly upon us at that point. And then ... blueballs...