Popular albums are disappearing from Apple Music: bug or messy algorithms?
Apple Music subscribers are victims of a bug or sloppy algorithms
Apple Music in general has had a lot of issues with alternate versions and multiple releases, where you’ll download an album, Apple Music would match that album to an alternate version of the same thing, and so then when you go look at the album, it treats it as though you don’t have the album.
That’s why people have complained about albums getting split up or going missing. The Apple Music catalog is messy and the matching algorithms are poor, meaning you often download an album straight from Apple Music, and then it treats that album as if you don’t have it.
You’ll see this in the Favorites and Replay playlists a lot. Plenty of songs are shown as though you don’t even have them. Think about that. Your most played songs of 2020 often are shown as though you don’t have them. How’s that possible? It’s because you downloaded song X, you played it a lot, Apple added it to your Replay playlist, and then Apple Music matched it against a different releases of that song (ie. from a Deluxe Edition or a Remaster or a Greatest Hits or an EP or a Single), and so then when you look at the song you downloaded, it thinks you don’t have that song, and so you download it again (at which point you now have two of them).
That’s what I mean by messy.
The Apple Music catalog is very messy and needs to be cleaned up.”
What is interesting is that some Apple Music users are now reporting that the missing albums are beginning to reappear on the Apple Music app. This would actually would seem to give some credence to the theory that “heyyoudvd” has been promoting.