Hi Ralph,
I'm feeling much more confident about scoring for recorder, now, thanks to your "challenge." Also with encouragement from this article in Wikipedia -- that I pretty much agree with:
http://en.wikipedia.org/wiki/Recorde..._instrument%29
So, here attached, please find a more typical recorder rendition of your score. The differences are:
- Alto is written at pitch (non transposing) as I've shown, though sometimes written an octave lower, still in G-clef, resulting in octave transposition when played;
- Soprano, an octave lower than sounding (but sometimes using the all'ottava G-clef with superscript 8, as I've shown it -- in which case, it is at pitch).
As a result, the whole piece is transposed up an octave from your version and sounds closer to an actual soprano, alto duet.
Now the recorder has an inverted conical bore which attenuates the higher partials. I've heard it said that this accounts for the impression that they seem to sound lower.
Thanks
Walt