Same. Out of 5,000 songs, am I really supposed to be hearing certain songs 3+ days in a row, when I'm only listening to 20 songs a day...?

I can't tell if it's:

- Certain artists are paying Spotify to favor them in randomization?

- There's some kind of shared random seed across devices that results in picking a tiny subset of songs to randomize from in the first place?

- Other?

I do notice that the effect seems to persist for maybe a week, then I'll never hear those songs again, but now it'll be different songs that keep popping up repeatedly.

There's a related effect when you launch a radio station based on an artist or track. If you launch it multiple times in the same day or week, you get the exact same list of tracks. But maybe a week later the tracks have changed, like the radio has been recalculated based on a different random seed.