tag to tag?

I have one folder with a lot of random music files in it where the tags are so messed up that it would take months to fix all the tags.

What I want to do is add 'various' in front of every artist name in the tags. So it would be something like "various - %artist%". I haven't figured out how to do this yet, can anyone point me in the right direction?

Edit: never mind, I found the right option in Actions :slight_smile: