Wrong Song Artwork Showing up on iPhone

My iPhone 8 is displaying the wrong cover art for certain songs. It's just a few and it's not necessarily every song on the album (although I do have one album that is all wrong everywhere), and it also changes over time which songs are affected or which album cover it's associated with. When I go to the album in my library the artwork is correct; when I select the song, the artwork is correct; when it shows up on the lock screen it's wrong, and if I look at it in my list of songs in the library it's wrong. I've logged out of iTunes and logged back in, resynched the library, but it's still wrong. Any ideas?