I'm not sure that words arranged in verses so that they can be sung to 'strophic' music and in lines with patterns of rhyme can be described as 'natural'. 'Conventional' would appear to be a better word. Jim provided some examples of internal rhyme above which make this point, for me.

Reference has been made to Bert's question, as posed at the end of his book. Bert Lloyd asks a number of rhetorical questions at the end of his book. For example, he asks if the makers of 'The coal-owner and the pitman's wife', and other modern workers' songs might be seen as intermediaries between an old tradition and a new.

He appears to answer at least some of these questions with a quotation from American musicologist, Charles Seeger. This refers to a 'more stabilized society' that we may hope is coming into being, and to the selecton of a 'new, more universalised idiom' for this society. Seeger says instead of attempting to keep folk song alive as something 'quaint ...' we should accept that it is changing, and 'help what it is changing into'. I am assuming this sort of attitude fitted with Lloyd's left wing approach, though one is tempted to mischievously read the 'help' as a coded reference to his own tinkerings.