Acman, we absolutely do not look at life from different angles, my friend "according to Wiki" started when he was a child, and worked all of his life, that's all he did. That summer he was was performing three nights a week and had absolutely no need to practice.
My point is; the average person could work from the time he was born until he died, and never be able to do what "my friend" did. Have you ever seen and heard, some of the very best improvising jazz musicians perform; not one sheet of musical paper in sight. Now I know there are many who say, "they just couldn't read music" and I say to them, "they just can't improvise jazz at a high enough level to be performing in front of a crowd of critical jazz fans".
No Acman we don't have different points of view, just different observations of reality.
I forgot to mention, he performed on a stage "live" in front of what has to be one of the biggest crowds in the world, that's the stage under the arch in St. Louis on the 4th of July.
Enjoy the music.