Mark, just responding to your question marks after the note lengths. Yes, you have that right; eigth note = quaver, sixteenth = semi-quaver from there we have a demisemi-quaver and hemisemidemi-quaver. I have read somewhere that a 1/128 note becomes a quasihemisemidemiquaver! For my part even though I'm a UKer, I do perfer what I tend to call the US system.