Yes, virtual. Hatsune Miku isn't actually a real person; she's a synthesized singing application for computers, otherwise known as a vocaloid.
Despite not being flesh and bone, Hatsuni has managed to become a huge star over the years, inspiring her own video game series and chart-topping albums, starring in commercials for Toyota and Google, and holding 'live' concerts (as a singing hologram) everywhere from Singapore and Japan to L.A. and Paris.
As it stands, the ArtRave tour is turning into one hell of a K-pop and J-pop fan's musical wet dream. Makes me wish I'd actually brought a ticket to it now...
See Lady Gag live by grabbing Mohegan Sun Arena tickets now!