Billboard expanded its number of weekly charts over the next ... Two years later, in August 1958, the Billboard Hot 100 songs chart began. At the end of 1958, Billboard printed a recap of the ...

The Billboard Hot 100 is widely considered to be the definitive all-genre singles chart in the US. Since it was launched in 1958, well over 1,000 songs have reached the coveted No. 1 spot ...

It was an era of flashy styles and fun songs. Artists like Madonna had incredible success throughout the decade. In the '80s, she released seven of her 12 Billboard Hot 100 number-one songs.