(Relevant) Getting a song on the Billboard charts is hard. Getting it to the top is harder. And getting it to stay at the top for any length of time? That’s a huge accomplishment. Any time a song manages to stay at the number one spot on a Billboard chart for any stretch of weeks is considered a major win for an artist — especially if the number of weeks it’s up there stretches into double digits, which only happens a few times a year. But a song at the top of the Billboard charts for 100 weeks? Unheard of. Until now.