Thanks for reaching out about this here in the Community.
We can confirm that the availability of music on Spotify is determined by the artists and their music label or distributors and can vary over time. For more details on this, it'd be great to take a look at this support site article.
If you'd like to listen to the album's songs on Spotify but they're not available, it'd be great to have them as files stored on your device and import them. Take a look at this support site article to read more about it.
Hope you’ll find this info useful. Let us know if there's anything else we can help with!
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