Conrad - I find each sentence of yours requires a great deal of consideration to get any sense from it, but it would appear that from a couple of recent posts you consider that it is necessary to preserve and transmit the old music and songs intact for the future at any cost... and that modern,contemporary composed songs taint the scene. (I may be wrong in this).

If so,I think you ignore the fact that singers (certainly on this side of the pond) in the nineteenth century and since made and make no distinction between the types of music that they sing. If a song is a good one, it joins the repertoire. Indeed many songs that are now in the repertoire of those considered source singers in the UK found their initial place on the music hall stage in the 19th and 20th centuries, and live cheek by jowl with earnest ballads of much longer pedigree, lyrical ballads composed in the 19th century, broadside ballads plyed on the streets and sung to (then) modern tunes. Search the repertoire of a 19th century singer like Henry Broadwood and you can find ballads in modal format, alongside the likes of "Woodman spare that tree". What, as far as I understand it, you are trying to do is preserve (in aspic) the old songs as if they are a compartmental entity in their own right - which they ain't.

As Ralphie said, things on this side of the pond are working nicely ... evolving in whatever manner the younger element of the folk movement sees fit, and as they always have done.