Why, iTunes?

In Songs view, here’s part of my Artists list (I list Composers’ names in the Artist tag to make them easier to browse on iOS devices):


And now, in Artists view:


Why is that artist listed four times (once with a photo that clearly isn’t Herr Bach)?

And that’s not the worst; I’ve got dozens of artists who appear multiple times in the Artists list. Hot Tuna is there a dozen times.

Go figure…