The original "Do They Know It's Christmas?" was spearheaded by Bob Geldof and released in 1984, featuring a collection of U.K. stars that included U2's Bono, Sting, Phil Collins, Duran Duran and Paul Young. The song was later revived in 1989, 2004 and 2014, each time with artists who were popular at that moment.
"Proud to be a part of this. It's probably one of the greatest moments in rock 'n' roll history actually having an effect on the world!" he shared on Instagram next to the Band Aid 40 logo. "How anyone can criticise such a magnificent and charitable project, which continues to save so many lives from famine is beyond comprehension. They need their heads examined and their values readjusted. #bandaid40."