One of the world’s famous records. And yet we never hear it.

It was the fastest-selling single ever and the first to sell more than two million copies, making it best-selling single of all time. It’s still the fourth. Only Elton John’s Diana version of Candle in the Wind, Band Aid and Bohemian Rhapsody, given a second wind following the death of Freddie Mercury, have outsold it. So if you discount the “special circumstances” surrounding these three, it remains the most popular single ever made. And yet it isn’t popular at all. I bet you haven’t heard it for years. Since it’s St. Andrew’s Day, let’s give it a spin, bagpipes and all. I’m still not sure what’s more bemusing: How such a huge hit can just disappear like this. Or how it became such a huge hit in the first place.