You can make a variation on Twinkle Twinkle! If you want to write a variation, just comment below and I will add you. But, you must follow these guidelines. 1. Don't remove other people's variations. Just put yours after theirs, and if you do happen to remove theirs and it was an accident, just press undo. If you do it on purpose, I will restore their version and remove you from the score. 2. It has to relate in some way to the main theme. You may change keys and even tempo but change it back to the original for the next person. 3. Have fun!