The raw data behind the story "Why Classic Rock Isn't What It Used To Be" https://fivethirtyeight.com/features/why-classic-rock-isnt-what-it-used-to-be/.
A data frame with 2230 rows representing unique songs and 7 variables:
Release year as listed in SongFacts
Song and artist name combined
Logical variable of whether release year is included
Number of plays across all stations
Number of plays across all stations if a year was found