Richard Branson's Holographic Launch: Blending Technology and Music Heritage

Richard Branson launched a digital music service in London using a hologram of himself, while he was actually in the Caribbean. The hologram, though recorded, can be made interactive with live technology. This innovation highlights technological advances in preserving musical heritage. The hologram is created by filming Branson in high definition and projecting it onto a transparent foil, which can be turned off.

Where is the real Richard Branson located during the holographic presentation?

What are the advantages of using holographic technology in this context?