The Impromptu, the Writing Down, and the Playing of the Notes

i was astonished to discover that people have taken the improvisations that keith did live in real time in front of an audience, transcribed them and learned to play them. So let's consider that music, many forms of music, three different types. And you can tell when someone is simply looking at the sheet music and playing the notes, even sight reading, playing music that they really haven't practised that much. The second kind of music,. we often see, particular when it's played by professionals in classical music, is some one who is reading the music, but knows it so well that they are just a little bit ahead of where they are.