John Lennon is appearing in a charity public service announcement 28 years after his death.

Thanks to digital technology, the former Beatle is urging Americans to support the “One Laptop Per Child” campaign to deliver solar-powered XO laptop computers to children in some of the poorest parts of the Globe.

“Imagine 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,” a voice and video image of Lennon has been created to say,” Lennon says in the ad.

“I tried to do it through my music, but now you can do it in a very different way. You can give a child a laptop and more than imagine, you can change the world.”