Music Appreciation. . .Or Not

I recently had some time to kill, and the handiest volume for this task happened to be The Complete Mother Goose. Its chief charms, besides the pictures of Mother Hubbard's dog, engaged in his various accomplishments and looking dreadfully pleased with himself, were a couple of very odd poems. Here is one of them:

There was a piper had a cow
And he had naught to give her.
He took his pipes and played a tune
And bade the cow consider.

The cow considered very well,
And gave the piper a penny,
And bade him play the other tune:
"Corn rigs are bonnie."

Cows have evidently been making suggestions to the People Who Materialise When One Is Trying To Practice In A Park, because they, too, invariably ask for "The Other Tune."