Song artwork does not appear on album?

Ever since upgrading to the new Music app on Catalina (or maybe was it when I copied my music in from a backup?) all of my album artwork is not visible on the album views:

The art is still attached to the individual songs, as evidenced by viewing the song information:

How do I get this song art (which clearly exists and is available) to show up on the album view?

Solution 1:

I'm still not sure exactly why this happened, but I was able to find a solution in via one of Doug's AppleScripts. Once again this man saves my day.

It is his Re-Embed Artwork script. It takes quite a while to run, but I can already tell that it is working: