Brigitte Xie will perform Mozart at Carnegie Hall this November as part of the American Protégé International Music Talent Competition. She's three years old, but will turn four in June.
Fox 5 has a video. From the news site:
— Read the restLast summer as the pandemic wore on, Xie's parents, Nicole Sun and Tao Xie of Ridgefield, Connecticut, were looking for something to keep their toddler busy.