Miku will be on stage at Hakkeijima Sea Paradise : Aquarium entertainment park in Yokohama!
Chek this video : Hatsune Miku on Facebook
You can see her stage everday from September 14th to September 23rd.
There are art work exhibition, limited goods, beautiful fireworks..many things going on!
More infomation : http://www.mikuevent.com/
pc/hakkeijima/index.html (in Japanese only)