This year I got into some pretty generic blues/rock when driving and really liked one of the songs in some playlist/radio [1]. Little did I know that the song was AI. So when I started a radio based on that song, the resulting radio was 99% AI though I didn't even realise that until after a second/third listen through.
So you can really fall through the rabbit hole.
[1] He Talked A Big Game, Played A Small Tune by Dumpster Grooves. A better song than most human slop that sells stadiums. https://youtu.be/L3Uyfnp-jag?si=mPBgJ_qO2AF80FGP
There's also obvious care and human creation there as well.
They have several "artists". Bertha Mae Lightning gets the better lyrics and artangements. Virgil Dillard gets simpler tunes and the occasional weird grammar/lyrics. And so on.
I even saved that radio as a playlist to show people: https://open.spotify.com/playlist/072Wp3cFsziKBQlnglF5XM?si=... It has both obvious AI ("artist" by the name of promptgenix) and not-so-obvious (Enlly Blue, Dumpster Grooves).
The weird/sad/funny/ironic part? Many of those songs are still better than whatever Taylor Swift and a lot of other artists produce.
They also removed a lot of discovery features - Playlist Radio - for example. And they still do have some version of it on the backend, but you have to go through some weird mechanisms to trigger it - like play the last song in playlist, wait till it ends (or rewind) and you get the playlist radio. But it's also a crippled version of it - prefers playing the exact same popular songs for some reason.
Then they released this DJ thing, which is laughably bad. No Spotify, I don't want someone talking to me with useless information in between songs. Who though that was a good idea? Who actually uses that?
There hasn't been a change in Spotify in last 7 years or so that wasn't negative.
Another extremely annoying effect is, being 40+, they only suggest music for my age. In “New” and “Trending”, I see Muse and Coldplay! I should make myself a fake ID just to discover new music, but that gets creepy very fast.
As opposed to what it has now devolved into: the most basic of similarity matching always showing you the same few hundred songs, combined with increasingly numerous paid placements.