Hey @Lamantine0
Seems that this artist is not on Spotify indeed. The best thing you can do is to ask them if they plan to come to Spotify as well. 🙂 Maybe they don't know about this service or maybe they doubt anyone would listen. Or, I don't know, there are many possible reasons.
This post in here is useful as well. 🙂
Have a nice day!
SebastySpotify Star
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