Beethoven Flash Mob, Pop-up Symphony

[Megan]

[YOUTUBE]http://www.youtube.com/watch?v=aRuMKjOU-rg&feature=youtu.be[/YOUTUBE]

[Michael]

Thanks for this, Megan. My son and I are following the BBC series so I'll put this on his Facebook page.

[Quijote]

I don't understand what is a "Beethoven Flash Mob, Pop-up Symphony". Please explain.

[Delirious Lab]

Flash mob (Wikipedia).

Basically, it's an unexpected performance designed to take passers-by by surprise.

Here's another good one with the Hallelujah Chorus:
[YOUTUBE]http://www.youtube.com/watch?v=SXh7JR9oKVE[/YOUTUBE]