Dizzy Gillespie once said that the definition of a pro player is someone who can play the same thing..... twice.
The discipline of motor/mental skills that comes from having a good teacher, then practice.
Plenty of great blind players of course. You don't need to see what you're doing (eventually.) In fact, you'd have no chance of doing that on a sax. There's just a 'home' position. As someone above said, rather like typing.
On a piano, it helps that Middle C is found right by the lock (for the lid.) Locate that, and you're 'home'.