[makeitdouble]

> The hidden reason for this is, you don't want to hear some 9-year-old kid who plays better than you ever will.

A surprise I had is that 9 yo is an advanced age in musical spheres. There’s international young pianist competitions won by 10~11 year olds. They are usually bound to become pro players, so not the average kid in your local music school, but it’s a good frame of mind for thinking about how good a 10 yo can be.