Holographic idol Hatsune Miku is the creation of the group Crypton Future Media, using software from Vocaloid, and the group has put the avatar on tour with a live band. The sight of thous,ands of screaming fans waving glow sticks while the the holograph "performs" on stage is straight out of a science fiction novel.
The avatar is huge and incredibly realistic. Check out "her" concert performance below. More videos can be found here.