Plex cannot handle collaboration albums.
i.e. releases, which have more than one artist name as their Album Artist.
You will need to decide on which of those three you want this album to appear.
Or maybe move it into Various Artists and have it appear as a compilation album.
In any case, use embedded meta tags.
All tracks of an album need to have identical content in the Album Artist tag.
They can have different content in the regular [Track] Artist tag. (Which is where you want to put the artist name of that particular track)
Important: once you have decided on the Album Artist, move the whole album folder over into the corresponding folder for that artist name. (I am talking about folders in your media file storage, not about anything inside of Plex.)
See https://support.plex.tv/articles/200265296-adding-music-media-from-folders/ for the folder structure I am referring here. Be sure to use it always.
The regular Windows file manager is not able to show or manipulate the Album Artist meta tag. Use a dedicated meta tag app, like e.g. Mp3tag - der universelle Tag Editor (ID3v2, MP4, OGG, FLAC, ...)
After doing all of the above, perform the Plex dance with the album.
Plex Web will not show the [Track] Artist of a track, if it’s identical with the Album Artist.
