@Giuseppe884
Hello:
This is a little odd. But this issue can be explained if the content simply might just have become unavailable for that Oasis compilation album for your listening region and some content is just greyed out currently not playable? Other tracks still playable on that release are probable due to official studio releases still available to you based on listening location. Each track of every release has to be allowed by the artist and/or the label or media provider for the music content to be available on the Spotify service.
To check on that release, here is a third party album look up service for listening regions it is or is not available for listening at the moment on the Spotify service: http://kaaes.github.io/albums-availability/#5VkPS9sK4VYUUeHG0icQmI
Spotify wants all the world's music, and they're working hard on making this happen for you. However sometimes agreements can’t be reached with the artist or label or a change may happen in music ownership.
Spotify adds thousands of albums and artists are added every day. If you can’t find an artist you’re looking for, they may appear (or reappear) soon. In the meantime, feel free to contact the artist or their label to ask when they plan to be on Spotify.
https://support.spotify.com/article/Content-missing/
Spotify users can use this Google form here:
https://docs.google.com/forms/d/e/1FAIpQLScMGwTBnCz8nOPkM5g9IwwbpKolEWOXkhpAUSl8JjlkKcBGKw/viewform for music requests, there is no guarantees the content added to this list will become available. This is an internal list Spotify uses internally to see how popular certain content is that might be missing on the service.
