Freddie Mercury ... a video of the singer is seen on the screen during the closing ceremony of the London Games. Photo: Reuters
Athletes parade as the image of the late British rock singer and composer John Lennon is projected to the sounds of his song "Imagine". Photo: AFP
'Digital resurrection' ... rapper Snoop Dogg (left) and a projected image of deceased rapper Tupac Shakur perform onstage during the Coachella Festival. Photo: Getty Images
