Can't edit info on purchased iTunes
WHY can't I override artist's name info (or anything else!) in Get Info for purchased iTunes? I have 15k songs arranged by artist's LAST names, and suddenly I can't find a few because Apple thinks I should alphabetize using FIRST names!
Suggestions I've found posted here have tended to be for folks using Windows Explorer. I'm a Mac guy using Yosemite. (Worth noting: doing the equivalent of right-clicking does NOT give me a Properties option.)