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 ...
Looking back at the biggest hit singles of every year, dating to the Hot 100's 1958 launch. By Xander Zellner Billboard has been publishing weekly rankings in one form or another for over a century.