I'm sorry, Sorcha, I made a mistake there in describing the sheet music. The second last note, the A, is actually on the first ledger line above the treble clef. My apologies for any inconvenience - I should have waited till I had the sheet music in front of me.

I want to clarify how this notation is used: when you have a note X with a harmonic symbol, are you trying to produce that note literally, or an octave (or more) above it?

If it is meant to be literal, then a harmonic in the middle of the A string then a harmonic in the middle of the D string would do the trick - just like you were saying from the beginning. (Now I really feel silly for wasting your time.) I've been able to produce those harmonics, at the same pitch as I would get if I fretted the note normally, but with a different tone of voice. Is that how it's supposed to work? I was under the impression that a harmonic touch would produce a higher note than a fretted note in the same place.

Thanks, Marion