Seol YoEun is a violinist from South Korea. In the above video by TwoSetViolin, they react to her progression video from ages 2–4 and I think I speak for everyone when I say: woah!
She’s 11 now and already performing for big crowds, such as a performance of Mozart Violin Concerto No. 3 in the UAE last November.
If you want to know more about her, you can read this Gulf News article where she talks about her favourite musicians and why she enjoys playing the violin. Her mother also talks about her daughter’s virtuosic abilities.