Jack,

The choice of lowest note is particularly important musically (see lesson 215)

When you're cutting and pasting from somebody else's work it helps if you credit them. Lesson 215 of what?

You have not quite caught up with my strange sense of humour. It is lesson 215 of a tutorial I could write if someone paid me for it. In plain English: "There are good reasons for this which can be explained clearly, but only after some more thorough studies." I think Will understands; he wants to talk to beginners.

There are various ways to skin a cat, but in the end they all involve work.