Coachella's Tupac Hologram: How It Worked

04/17/2012 01:15 pm ET | Updated Apr 17, 2012

Tupac Shakur was the star performer at the first weekend of this year's Coachella music festival in California--despite the fact that the hip-hop legend died more than 15 years ago.

The late rapper surprised, delighted, and creeped out the crowd by appearing through a convincing, though slightly unsettling, hologram.

The Tupac image was created on a computer, piecing together physical characteristics and movements from the performances recorded before the rapper's death.