On Aug. 4 1958, Billboard launched the Hot 100, forever changing pop music -- or at least how it's measured. Sixty years later, the chart remains the gold-standard ranking of America's top songs ...

This top Billboard Hot 100 songs of each decade is ranked based on each title’s performance on the Hot 100 through the chart dated Nov. 1, 2014. Songs are ranked based on an inverse point system ...

Billboard’s Top 100 Songs of the Summer 1958-2017 chart is based on each track’s performance on the Billboard Hot 100 during the summer tracking period from Memorial Day through Labor Day.

The Beatles had 71 top 100 songs in the United States, and nearly all of them -- including 31 in 1964 -- came during their active years.

During this week 48 years ago, Gemini 10 was launched, “Lost” actor Matthew Fox was born and people were groovin’ on the following songs, via Billboard’s Hot 100 chart archive. 10.