ALL the hits.
Every top 40 hit that peaked in that season of that year, plus other songs that missed the top 40 but that have gone down as classics, or as influential, or as memorable novelties.
Are any songs missing?
Only the ones that aren’t available on Spotify. A list of these songs is shown in the playlist description. Ignoring these few, enjoy hours of listening in any of these precise eras.
I can’t get the songs to play in Spotify.
Try opening the app in the background first. Then click on several different songs and be patient. Sometimes the app is slow to respond at first but eventually catches up.
I found an error!
It was impossible to listen to every song while compiling these lists, and I expect to find that I made some mistakes along the way. If you encounter a song that appears to be the wrong version, please let me know. If you want to quibble about which season a certain song belongs in, it should be at least two seasons off; also, please back up your claim with verifiable evidence. Send feedback to firstname.lastname@example.org.