PROJECT: YouTube Symphony Orchestra [2009 & 2011]

The culmination of the YouTube Symphony Orchestra 2011 saw the Grand Finale Concert at Sydney Opera House brought to life through extraordinary, real-time projections on the interior of the Concert Hall and the exterior of the iconic sails of the Sydney Opera House, and streamed live on YouTube around the world.

Within less than a week, YTSO became the most-watched live music concert on the Internet.  [Limelight]

"The YouTube Symphony Orchestra is an orchestra assembled by open auditions hosted by YouTube, the London Symphony Orchestra and several other worldwide partners. Launched on December 1, 2008, it is the first-ever online collaborative orchestra.
Wikipedia

YTSO @ Carnegie Hall

 
http://youtube.com/symphony Official opening video of the YTSO concert @ Carnegie Hall, April 15, 2009