Sucks to have your radio stations. Mine rotates crap through all the time.

Funny story, when I started doing curation, I wanted to get a good list to start from. I looked at the API for Jack FM because I kind of like their mix.

I knew that there was going to be a substantial amount of repetition because you hear the same stuff a lot. Turns out there API doesn't have any limits on it. If you talk to the iHeartRadio API and ask it for 20,000 of the last played songs it'll give them to you.

I went back 3 years. Their entire roster was 600 songs. As I started pulling my own curation together from their list I noticed some things were absent. I noticed that some of the things that were on the same album and were arguably better songs weren't in the curation list. My guess is that whatever catalog they were licensed to pull from they only had a certain number of top hits. A lot of the stuff was the b side of the singles, It was probably a cost savings scenario.

Later on I decided I wanted some other collections to pull from so I started pulling serious XM stations and my local radio stations. Unfortunately for this phase of the date I had to collect for a long period of time so I don't have years of history. My local radio station had 6,000 unique songs played over the period of 1 and 3/4 years. Which I never would have guessed because again you just hear the same stuff over and over but it's confirmation bias.

Obviously it's nothing like the catalog Spotify has where you might hear two new things to every old thing. But there was a fair amount of discovery there. The whole concept of adding pop as it comes in you know.