I am sure you mean O Fortuna by Carl Orff. This one is pretty famous, yes. Had to learn it, but the entire Carmina Burana, in Latin!! in school, we had a subject, choir, and one of the projects we made as a music school was learning this and performing. School orchestra and choir, with a brand new, young teacher that came. She had great expectations :)) Hours of rehearsals, and all, we ended up crazy, and she with us I suppose, but it was one of the super great events, so much excitement on the evening of the performance. I wish my son could have such an experience now. Maybe, if we would live in a bigger city, but we are situated in a smaller town. They did some projects joining several music conservatories a few years ago and it was cool, but he was still smaller, so less demanding pieces were played.

La donne e mobile... I am asking myself why you were playing this just to your children in the car? Maybe you will stay without dinner if you play it to your good lady? :D {just a joke ;) }