Cos I think my son has just about got it .......he seems to spend most of his time mastering the difficult fast bits so I havnt got to hear it all the way through, but overall I think I've heard him play all of this

http://www.youtube.com/watch?v=4PBdw9awue8&feature=fvwrel

To me, the uninitiated, it seems ferociously difficult towards the end, but what do I know, apparently the pieces that Bill Bailey plays in black books (flight of the bumblebee and another sound difficult but arn't the most difficult)

Forgive me for the thinly veiled boasting, but Im very proud of him :