If you want to get the average person interested in the orchestra, this is one way to go about it. Just nonchalantly rock up at a public square, whip out your trumpet and start blasting out one of the most recognisable sci-fi tunes ever composed. And by trumpet, I mean the actual musical instrument not... well, let's move on, shall we?
As this article over at Mashable explains, the folks performing the piece are from the WDR Symphony Orchestra, based in Cologne, Germany. They slowly but surely set themselves up in the city's Wallraf Square, beginning with the low-key appearance of a conductor and trumpeter.
It ends with violinists, harpists and an assortment of other instruments and it sounds pretty darn good to my ears. Hopefully, it's not just a once off -- I could easily get used to this sort of thing.