The original version of the hugely successful charity single Do They Know It’s Christmas?, written by Bob Geldof & Midge Ure in reaction Michael Buerk’s BBC reports of famine in Ethiopia, was performed by Band Aid, a group comprising of the biggest names in British music at the time. It even led to the enormous Live Aid benefit concert the following summer.
Here’s an excellent collaborative cover version produced by Ronin Wong, who gathered 43 performers around the world – mainly uke players – into this video collage (full credits & back story). See how many faces you recognise!
More info on Wikipedia.