This is pretty sweet. And an orchestral flash mob is a good flash mob because it doesn't feel the same as when the just-post-kids take over the streets with their Thriller moves. It feels as formal and as rehearsed and as not improvised as (non)flash mobs actually are. They are not weather. They are performance.

I'd love to happen across one of these. Just saying. (And please do wear the penguin suits!)

Thanks for the tip, Marco.