It would be a good idea to follow the piece on-screen in the PDF format while listening to it. I hope you Bach fans like this piece. Write your opinions, I'd like to know what you think about it. The march like tune starting in measure 13 is Henry Purcell's. This piece is etude-like to me since it forces one to play in the upper right hand side of the pedal board and presents coordination requirements not normally encountered in classical pieces.