For the chart's 35th anniversary, we review all of the chart's year-end No. 1 winners. By Trevor Anderson Since Billboard first began its national survey of song sales in the 1940s, the ever-changing ...

We should address the elephant in the room: hip-hop did not have a strong year on the charts. In fact, rap music had its worst showing in years. Back in October, it made headlines when—for the first ...