This may not come as news to you, but I was gob-smacked to learn that the tune for "Baa Baa Black Sheep..." was the EXACT SAME tune as that of "Twinkle Twinkle Little Star".
The story goes like this.
Kevin traded some games for this rocking chair. You've seen elements of the chair - mostly the back as it is supporting Zupe's super head. You may not have seen the cute little cat and dog that hang from a bar for easy play time. And, unless you've seen the video or been to our house or have one of these Fisher-Price chairs of your own, you wouldn't know that if you pull the bone that hangs under the dog, a little melody is played. For weeks I'd been singing along.
"Baa baa black sheep have you any wool?" (Though, to be honest I have trouble with the last line. Trust me here. Don't make me sing it.)
Then, one day, I said to myself, if not to Zupe, and then to Kevin - "Hey. The chair is playing a new tune!"
Kevin is the only one to respond. He said something like, "No."
My response, "Yes, I'm sure it used to play "Mary had a little lamb" (note- sheep song confusion... early sign of brain aging.) "Now it is playing "Twinkle Twinkle Little Star"."
A day or two later it was playing "Baa, Baa Black Sheep" again.
It was about this time that I did a YouTube search for the two songs and compared the tunes and found that they ("Twinkle" and "Baa") were the same.
And, so I was happy and smarter and I had the option of singing either song when I heard the tune time after time after time.
Months past. Months.
One day I found myself singing along...."A, B, C, D, E, F, G..." (Go ahead. Check it out for yourself. I'll wait.)
(NOTE- This is not news to Wikipedia. Of course not.)