If i had spent as much time, money and effort into making such an elaborate mechanism,
It's actually -very- simply, and fairly inexpensive. (These are one-off Lowes/Radio Shack/ebay prices not bulk.)
Melamine shelf $3
Wallwart to power the servos $10
Aluminum 'L' $20
Assorted hardware $5
Servos @$3.50 $65
Piano wire $4
Build -one- = 4 hours
Replicate 15 times = 8 hours
Software = 8 hours
Granted, the umbrellas may not last more than a few hundred cycles before things start to fall apart. Industrial grade cocktail umbrellas made out of ripstop and carbon fiber should last hundreds of thousands of cycles, maybe longer than the cheap servos. (But they cost an hour each to make.)
i would have made more than an 11 second video!
Sixteen cocktail umbrellas dancing to Pharrell's Happy Song? PRICELESS!!!
I'd also be annoyed that it only got 83 views in a year on YouTube.
Marketing -really- dropped the ball there. :(