2Pac

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"Reanimated corpse" isn't entirely accurate. It's actually a hologram of the late, great West-coast rapper, which gave a surprise performance to finish off the first week of Coachella 2012. This proves that (a) industry executives can own your body as well as your soul, and (b) '90s nostalgia has gotten WAY out of hand.

With 2Pac's 'California Love' and Beck's 'Loser'

If we can play devil's advocate for a moment:

Sugarhill Gang, 1979: "I said a hip, hop, the hippie the hippie to the hip hip hop."

Shabazz Palaces, 2011: "Yeah, you know I'm free, s**t, I'm free ... To make consume to catch the stuff that holds me down To capture my desires fashion out of this a crown Free to fill my smiles up with these tears that I forgot And haunt myself besides these pretty ghosts that float my heart You know I'm free."

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When a holographic version of Tupac performed live at Coachella, the stage wizardry proved a little too realistic for some. Just wait until they do the same for Biggie.