Who wrote "Twinkle Twinkle Little Star"? Some believe Mozart did but the tune, well known to the French as "Ah vous dirai-je, maman", is a folk tune. Mozart wrote the famous variations based on this folk tune. Like folk stories they were passed down orally and the original composer is not known. Often there are many versions of the stories....or tunes! When I listen to Mozart's version of Twinkle Twinkle Little Star I hear scampering stars, skipping stars, sad stars, upsidedown stars....This link takes you to listen to a little bit of it. It's really a great one to own for your own family collection.
Enjoy.