Well, I was always told that the “pocket full of rye” represents about how many stars one can see in the sky at night. Rye seeds are VERY small and a few thousand can fit in a pocket. The blackbirds are the hours and when the day breaks/the pie is opened the “birds begin to sing”. The King is the sun counting out the golden days (“the money” cuz after all time IS money). The Queen represents the waning moon disappearing as it’s eaten (the surface of the moon rather looks like “bread & honey”). “The maid” is the earth, “hanging out the clouds” (like we do). The final verse:
“She caused such a commotion that little Jenny Wren
Flew into the garden and put it back again”
In this the blackbird that pecked off our nose is the terrible cold at Midwinter. Little Jenny Wren is a herald of Spring that puts things right as the days again begin growing longer at the Winter Solstice.
I can’t remember just now what the first line means.