This is just unbelievably cool:
Just an ordinary day at Copenhagen Central Station. 2:32 PM.
Some guy sets up a snare drum and starts playing. Sounds like the ostinato rhythm from Ravel's Boléro. Oh wait, there is this other guy with a cello accompanying him playing the ostinato in pizzicato. A woman stops by. She takes her flute out of her case just in time to start the melody.
So far it looks just like an ordinary bunch of street musicians. However, by the time the clarinet and bassoons join you start to realize that something extraordinary is going on. More and more musicians stop by and unpack their instruments just in time to start playing! It's a full-fledged friggin symphony orchestra! In fact, it's the Copenhagen Philharmonic!
This is the best flashmob, ever!