Hi, M.G.:

How do you get notes that high on a flute? Overblowing? Not a flute player, myself, obviously.

Regarding octave numbering, now that I think about it more, your description of the European system rings a bell. Low A on a piano is A0 or just A, then the next A is A1 etc., making middle C, C4. Whereas the "American" system numbers the first A as A1, making middle C, C5.

Now that's all cleared up, I will now tackle the national debt.

David