Holographic technology.... While it's still crude, you can see her hands go through her hair a few times and her lips are not completely in sync with her singing (which could be due to the quality of the video), to name a couple "glitches" I saw, it's still very impressive. You can see that there is a "screen" that has been put into place on the stage. It's not easy to see, but if you look carefully, you can see it. It's something the projectors use to project the image onto. Don't ask me for details though. lol To be quite honest, I am not surprised that it is the Japanese that did this. They are the ones leading the world in "unknown" technology like this, like their humanoid robot. This is still VERY impressive and they are well on their way to making it happen.