Not just any dueling pianos performance, this one by Japanese pianist Yoshiki, performed in Austin at the SXSW Festival, had the holographic performer appearing first who then later introduced the real performer. While there's not much word on the hologram technology, it's believed it was created using an updated version of an illusion known as 'Pepper's ghost', a system developed by London-based Musion. Continue reading for a video and more information.
According to The Daily Mail, "The musician has been experimenting with holograms for several years, long before the technology was used by more mainstream artists. It was most famously used in 20012 at the Coachella festival where Snoop Dogg and Dr Dre brought back late rapper Tupac Shakur for their headline performance."