When I was younger, I remember hearing things like this about Mozart and thinking, yeah, I could kind of see it.

Now that I've raised several kids, my shock level of the stuff Mozart was doing at the age of 10 continues to grow.  One day we are going to find out that Mozart was a pseudonym for some old dude that kept composing stuff long after Mozart died, and attributed it all to Mozart at the age of 8, except that no one really thought that was possible, so they moved the number to 10.