Tupac Shakur http://nhpr.org en How That Tupac Hologram At Coachella Worked http://nhpr.org/post/how-tupac-hologram-coachella-worked <a href="http://www.npr.org/artists/88479205/tupac-shakur" target="_blank">Tupac Shakur</a> was killed more than 15 years ago — three years before the first Coachella Valley Music & Arts festival was held. But thanks to a trick of light, he's probably the single most talked about musician who performed at this year's version of the festival.<p>Except, well, "performed" is a funny word to use. Tue, 17 Apr 2012 22:15:00 +0000 3196 at http://nhpr.org How That Tupac Hologram At Coachella Worked