What about this one?
"if there's a bustling in your hedge row
Dont' be alrmed now,
It's just a sprinkling (or spring clean?) for the May Queen."

stairway to heaven....Led Zeppelin...not folk,
but i remembered the word May from this song..

i always thought (until just now when i looked it up)
that it was a sprinkling..... another mondegreen revealed!