Finally fixed this issue. In the music app on my MacBook, I went to each song in an album that had missing artwork. Usually, the first listed song shows a visible album cover when played, but the rest of the songs don't show art in the "now playing " section. When I click the involved songs with the shift key and then get info, it shows artwork. I then go to edit and delete the album cover using the cut command. Then click ok, go to the library, get album artwork, and then retest. Usually it is fixed. Occasionally, Apple AI picks a random album cover that is obviously wrong or different from the first song on the album, which was correct. So then I had to click the group of songs, edit and cut the wrong art, go to the proper artwork, copy, and then paste it into the group. This was time-consuming: going through the entire song Library, checking Now Playing for missing artwork. I had about a third of my songs missing artwork. I can say it is fixed, and my BP is lower now!