Vaneyes, after your post, I emailed the website author, asking for a reference. I have not heard anything.
Due to an appointment, I was a half hour late to rehearsal last night and missed the warmup. It included a tutorial on how to tell, as a group, when we are going out of tune and how, as a group, to fix it. Sounds interesting, but everyone else will need to save me.
We spent a half hour working on Mvt. 9 Quando corpus. The emphasis was on tuning, of course (a cappela), following the director (con rubato), and dynamic difference.
We then proceeded to Mvt 8 Inflammatus. The tricky motif in this movement is singing a double-dotted quarter note with sixteenth note against the rapid triplet pattern in the orchestra.
In Mvt 5 Eia Mater, also a capella, we seemed to be struggling with the same factors as before--the tempo changes in and out of the 6/8 and the modal differences between the repeated phrases. The very last line will be directed with subdivided beat.
We concluded our rehearsal with a quick run-through of the Fugue. Maestro is coming to work with us next week, and the following week we have serveral rehearsals with the soloists and orchestra. Our performance dates are Nov 9-10.
I also started rehearsing this week with an ad hoc chorus which will perform Handel's Messiah the first weekend in December. I am fortunate to be working with two gifted and respected choral directors at the same time!