Pedant No 4 - that is a complete construct. Out of copyrght means out of copyright, and it means different things in each jurisdiction. There are hundreds of pages in Laddie Prescott & Vitoria (the principal UK copyright textbook) and Nimmer (USA) and that rather splendid Australian one the name of which I always forget about the ways in which copyright may fail to arise, or be lost. "Copyright" is absolutely nothing to do with "traditional" - except that it is hard to think of a way in which a traditional song could be copyright (an old unpublished one could be until 2038 - check it out).

There are times when it is wise not to rush in.