Thanks, tomjaw.

What I meant (and should have been clearer about) to ask was whether the pitch ranges in the psalm verses relative to the polyphonically-set antiphons are practical.

I have been 'snookered' before by nice polyphonic settings of things that alternate plainchant and polyphony, where the polphony is terrific but then requires terribly high-pitched chant around it... and tranposing the polyphony down then isn't possible because of the pitch ranges for each voice (usually to do with the alto).

Also, does anyone know whether Isaac did any falsobordone settings of the psalms?

If the chant is too high for the tenors, why don't the altos sing it?

I’m so glad that folks are still making use of these.
My parish choir hasn’t used polyphonic settings in a good while and it makes me sad.

At my parish, we use your editions all the time!

These settings are great,
Here is our programme we do quite a few, https://stbedeschoirblog.wordpress.com From the last list that we got @CCooze did for us we only have a couple that we have not yet used.
We have lost some key people over the last few years, so it has been difficult to maintain the polyphony, but we are just managing! We are training up new singers from the children's choir, so we should be back to full strength again soonish!

It occurs to me that there is another Ecce Virgo; I wonder if it contains an Alleluia as the one for Advent does not; otherwise, one can use the Advent one already transcribed in most years for the Annunciation.

I'm working on editing and transposing a few of these for our needs (including replacing the incipits and, in the Asperges the psalmody, with that of the Vatican (Solesmes) edition. I personally have had relatively few opportunities to sing polyphony except in bursts here and there, and it's a bit wild, as I first heard of the "Isaac communios" about ten years ago, and they've stayed in the back of my mind ever since.

Ah, that's a great question. Force of habit is simply too strong, and I would like to sing the chant, a psalm verse, the polyphony, the psalm verse, chant, a verse and then polyphony. Not all of our schola can, at this point, sing polyphony, and cutting them out of the propers is a bit awkward, so I would like to sing this as normal even if we interpolate polyphony in place of a chant repetition.

We normally do two verses, but in Advent and in Lent without the organ, and on Christmas, we have plenty of time to do three, and we have to do even more on feasts if no motet is planned, so even with a polyphonic setting for some of the repetitions, we still have oodles of time left.

My thinking is that either this covers the length of communion through ablutions, or if it doesn't, we can do a separate motet; there will be Sundays where the latter is the case, but I'm betting that on weeknights where we can use the polyphony we won't have time.

And I am thinking of trying out, for Passion and Palm Sundays, his Asperges, in order to make the music last long enough without the Gloria Patri; I can do polyphony (in terms of this problem) for the repetition) taking away congregational singing there is simply off the table, and while doing it in our usual key (the mode IV, with no sharps or flats) requires some adjustment to the alto voice (more than usual), it will be a nice treat, to showcase what exists in the treasury of sacred music and that, yes, in fact, these works can and should be used liturgically. So since this would be for the repetition, I've set the usual incipit, as well as the chant (I don't think that we'll ever do the psalmody polyphonically, but…and luckily, for the Sundays we don't have the doxology, the switch between voices that's a bit more extreme than usual isn't a problem, since that's where the alto line gets too low).

*Oh, yes, for feasts like Saint Joseph or the Sacred Heart, I would like to do faux-bourdon for the verses, seeing that these communions don't exist in the classical polyphonic repertoire…