LoL

Nice try George!

I think the simplest is to go on using the word traditional to describe the process (of any era or nationality), but to credit individual works without using Trad at all.

1) Anon (or Trad anon if you really must)

2) Writer's name, PO (publicly owned)

3) Writer's name (the snag with this being that eventually it becomes PO, but that's down to PRS to know)

4) Writer's name

5) Writer's name (!)