Hey @niekster1,
The availability of music on Spotify is up to the artists and their music label.
If the music is unavailable, the artist or their music label has likely decided to not make it available yet in Spotify.
Sometimes the music is only available in certain countries, while access is blocked to others.
Sometimes the album or song will be unavailable temporary, and come later.
Hopefully it will come later.
More info here:
https://community.spotify.com/t5/Content-Questions/I-want-an-artist-song-on-Spotify/td-p/1136005
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