Originally Posted by Nathzi View Post
that's awesome XD
though they used the same style like the miku concert

http://www.youtube.com/watch?v=DTXO7KGHtjI
^^
This.

Too bad neither of them are a hologram.
( My opinion. )

I believe they're just using a type of blackscreen and just shooting a very high quality projection onto the screen.
Something of the sort at least.