Moot in this context is 'meeting'(at the root)... where the oak trees' roots are seen in the grass beneath it.

I'm not sure if I object to the term 'fakesong' - it was written well over a hundred years ago, by an educated yet simple man who had a deep and heartfelt passion for his home county and its people. There are 'folk' songs doing the rounds now that were written far more recently and with much less altruistic motives.

LTS