There is a difference in context between the "patter" or recitation in the middle and end of songs and the streight recitation-for example see the ones I recently posted.

The recitation included in songs is in "pitmanic" dialect but the full recitations are in standard english.

I wonder also how the publishing process has interfered by trying to make songs easier to read by the "Maccam's" and "cockneys"

Conrad