In case you didn’t believe the hologram hype would last, here are the hard numbers: Following Ghost 2Pac’s Coachella performance, Tupac Shakur’s Greatest Hits album popped back up in the Billboard 200 (at No. 129) for the first time since 2000; meanwhile, the two songs performed by the hologram saw a 1,530 percent (“Hail Mary”) and 881 percent (“2 of Amerikaz Most Wanted”) sales increase, respectively. So, yes, holograms are an effective novelty marketing strategy! And the Ghost Tours are looking more and more likely.