More than a quarter of a century after his death, John Lennon is still appealing to us to imagine a better world.
The singer has been digitally resurrected in an advertisement asking people to donate laptops to the world's poorest children.
The former Beatle's voice and image have been stitched together using computers in a commercial for One Laptop Per Child, an organization that aims to give low-cost, durable computers to young people in the Third World.
In the clip, multi-colored pixels bombard the screen, eventually forming the face of the spectacled singer, who says: "Imagine if every child, no matter where in the world they were, could access a universe of knowledge.
"They would have a chance to learn, to dream, to achieve anything they want. I tried to do it through my music, but now you can do it in a very different way."
His widow, Yoko Ono, has signed off on the ad, which will shown in the U.S. and on the Internet. Lennon was shot and killed outside the Dakota apartment building in New York, where they couple had an apartment, in December 1980.