Ok, yeah yeah, I work for Cisco, but that's not the point. This is musically amazing. Studies have been done where musicians try to perform together over phones or video conference but as the latency goes much above 250ms it gets maddeningly hard to stay together. This performance and the technological ability to do it is incredible.
Secondly, I wish I lived in a culture that still respected classical music enough to use it in a popular setting like this. If this were done in the US they would have been reduced to dancing to U2 or something.