"It began the moment you sat down at the piano, when you hadn't practiced all week, and you have to sound like you know the music you're supposed to have practiced!"

Well said SRS!

Those of us who Music Prac Exams had to pass it!

There is a very good recent BBC TV series "Big Bangs in Music", the full reference details of which I can't recall immediately, by Howard Goodall - this goes well into the history of Music Notation.