Jan. 20 in music history: Songs that topped the Billboard Hot 100 chart through the decades No. 1 tracks from 2010, 2000, 1990, 1980, 1970 & 1960 Amber Ainsworth ...

The 1980s was an incredible decade for music, but two pop icons led the way with the most number-one songs. ... "In the Air Tonight," only reached as high as 19 on the Billboard charts.