You probably weren't even aware this was still a thing, were you? That probably says all that needs to be said. Nevertheless I'm sure you remember when Tupac showed up at Coachella and everyone freaked out, or when Michael Jackson performed at the 2014 Billboard Music Awards. Hologram USA is the company behind many of these attempts to push music tours by the deceased, and it's been trying to get the whole thing off the ground for several years now. Yet the idea of paying money to watch a hologram that's presented as if it's a real-life dead person doesn't so much elicit excitement as it does a slight feeling of unease. It's an idea that makes people more curious than willing to drop large amounts of money, and is basically just an expensive, morally bankrupt way of watching an elaborate YouTube or DVD performance. So what's going to kill the industry? Well, apart from the fact attempts to push the technology in recent years have largely failed, Hologram USA recently unveiled plans to resurrect Whitney Houston on-stage, and public and critical reaction has been, as expected, slightly alarmed and a little bit disgusted. Not only that, but Hologram USA and its rival are currently battling it out over patent litigation, so it's entirely possible the industry will devour itself while trying to traverse innumerable legal obstacles.