system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Is there any particular reason popular radio stations seem to only play the same 10 songs over and over again?
gpt
Top 40 stations--the sort of station that plays the big hits--do just that. Assuming about ten songs an hour, you're looking at repeating songs every four hours; realistically, they're also playing the top 10 more frequently.

Corporate radio has it down to a science; extensive marketing research goes inti exactly how frequent songs get played.