(In 2018, the Billboard staff released a list project of its choices for the Greatest Pop Star of every year, going back to 1981. Read our entry below on why Ed Sheeran was our Greatest Pop Star ...

The Greatest of All-Time 60th Anniversary Billboard Hot 100 Songs & Artists rankings are based on weekly performance on the Hot 100 (from its Aug. 4, 1958, inception through July 21, 2018).