Incomplete Folder
We assume a folder represent an album (or disc of an album) and this section lists folder where only some of the songs are matched to a MusicBrainz release, usually all songs in a folder should be matched to the same release.
We can select an item to look in more detail, so here we can clearly see that track 9 is not matched to MusicBrainz. This can be fixed using Match To One Album task.
