Joy wrote these words down for me - I would estimate they were current in the 70's

On top of the mountain, All covered in grass.
A bald-headed eagle was scratching his
- don't be mistaken For what I have said,
A bald headed eagle was scratching his head.

to the tune of "On Top of Old Smokey"
the artistic effect of "rhyme refused" is implied by singing straight into the second verse instead of the last syllable of the first.