Our new church choir director brought this to her first rehearsal, didn't recall where she found it but its on Google:

A Funny Little Story About Hymns and Praise Songs, Author Unknown

A farmer went to the city one weekend and attended the big city church. He came home and his wife asked him how it was. "Well," said the farmer, "It was good. They did something different however. They sang praise choruses instead of hymns."
"Praise choruses?" asked his wife, "What are those?"
"Oh, they're OK. They're sort of like hymns, only different", said the farmer.
"Well what's the difference ?" asked the wife.
The farmer said "W it's like this...If I were to say to you 'Martha, the cows are in the corn,' well that would be a hymn. If on the other hand, I were to say to you 'Martha, Martha, Martha, Oh, Martha, MARTHA, MARTHA, the cows, the big cows, the brown cows, the black cows, the white cows, the black and white cows, the COWS, COWS, COWS are in the corn, are in the corn, are in the corn, in the CORN, CORN, CORN, COOOOORRRRRNNNNN.'then, if I were to repeat the whole thing two or three times, well that would be a praise chorus.

As luck would have it, the exact same Sunday a young, new Christian from the city church attended the small town church. He came home and is wife asked him how it was.
"Well, " said the young man, "It was very good. They did something different however. They sang hymns instead of regular songs."
"Hymns?"asked the wife, "What are those?"
"They're OK. They're sort of like regular songs, only different." said the young man.
"Well, what's the difference?"asked the wife.
The young man said, "Well, it's like this...If I were to say to you "Martha, the cows are in the corn' well that would be a regular song. If on the other hand, I were to say to you,

Oh Martha, dear Martha, hear thou my cry,
Incline thine ear to the words of my mouth.
Turn thy whole wondrous ear by and by
To the righteous, glorious truth.

For the way of the animals who can explain
There in their heads is no shadow of sense.
Hearkenest not they in God's sun or his rain
Unless from the mild, tempting corn they are fenced.

Yea those cows in glad bovine, rebellious delight,
Have broke free their shackles, their warm pens eschewed,
Then goaded by minions of darkness and night
They all my mild Chilliwack sweet corn chewed.

So look to that bright shining day by and by,
When all foul corruptions of earth are reborn
Where no vicious animal makes my soul cry
And I no longer see those foul cows in the corn.

then if I were to do only verses one, three and four, and change keys on the last verse, well that would be a hymn.'