The Secret History Of Band Aid. Just what did happen to Band Aid 3 to 19? All is finally explained. The appeal of “Do They Know It’s Christmas?” was potent, but limited pretty much to December. There were eleven other months of the year in which famine could strike. And so was born “Tan The World (Let Them Know It’s Summer Time)”. “The people in Antarctica, they’re fuckin’ freezing” said an angry Geldof. “Tonight it’s Factor Ten instead of Two” sang Bono. Glorious days.