What is the Billboard Hot 100?
is the music industry standard record chart in the United States for singles
Who publishes it?
"Billboard" magazine
What is one thing the ranking is based on?
sales
And another?
online streaming
And the last?
radio play
What changed in 1991?
Nielsen started tracking sales in 1991
What day is the list released?
Tuesdays
Before 1955 what did not exist?
"Billboard" did not have a unified, all-encompassing popularity chart
What did radio mainly consist of before 1955?
more spoken-word programs than music radio
What date was the first top 100 list published?
November 12, 1955