In my opinion copyright should be restricted to the authors and their heirs and not be transferrable. Publishing and recording rights ,of course could be granted to others , but only for a short term .
This would leave the copyright always reverting back to the author , say every five years or so.
As for someone having the gall to attach a copyright to traditional or public domain music , arrangements be damned, it should never be allowed.
To put your copyright mark on someone elses work is simply theft.
As for Woody and his disdain for copyright , maybe if you turn the music sheet over and if on the other side it "didn't say nothing" then it is not a tresspass. :-}
    Slainte,
          Sandy