In the early 1900s, jugglers and acrobats, not singers and rappers, kept their eye on Billboard magazine each week. In those days, the magazine served as the insider's bible for the traveling fair and carnival crowd.
DID YOU KNOW? Marlon Brando hated memorizing lines so much that he posted cue cards everywhere to help him get through scenes.
He even asked for lines to be written on an actress's posterior. (That request was denied.)