Alma Deutscher began playing the piano at the age of two. By the age of six, Deutscher had composed her first piano sonata. And by the age of seven, her first operatic piece.
So she's good.
Just how good Deutscher is can be seen easily in this 2017 clip from 60 Minutes, where the child prodigy was given four random notes pulled from a hat. She created a piano sonata in under a minute.
https://www.youtube.com/watch?v=Y2rGpAK6nRQ&feature=youtu.be