was one of the headliners, along with Dr. Dre
, at the 2012 Coachella Valley Music and Arts Festival
last night and during his set he "brought up on stage" one of his good friends to perform with him ... the late Tupac Shakur
. Despite the fact that Tupac
was killed 15 years ago, he was able to "perform" on stage with Snoop last night due to the wonders of hologram technology
. Honestly, it's ...