Most Popular Song Each Month in the 90s
https://www.youtube.com/watch?v=KOzmEgdQyc4
most popular song of each year
Most Popular Song Each Month since January 2010 (READ DESCRIPTION)
https://www.youtube.com/watch?v=WijwbIbjgO4
Most Popular Song Each Month in the 70s
https://www.youtube.com/watch?v=i0MzvQhl23U