Well, this isn't a post to rant about iTunes. I'll do that another day.
The iPod can be a bit bit, er, quirky at times (I would say flaky or buggy, but I don't want to set off any apologists). One of its tricks is to occasionally mix up the album art when it plays a song.
Sometimes with amusing results.
I'm not sure what's going on behind the black bar , but maybe some things are better left to the imagination.
You girls just carry on.