Hmmm ... but for what ensemble was the
Mass in b minor composed? Leipzig or Dresden (with a catholic court)? The title page of the performing score is believed to be written by the Dresdner Gottfried Rausch, who also assisted the Dresdner court composer Jan Dismas Zelenka. Compared to the amount of forces Bach was used to in Leipzig, the Dresdner
Capella was known to be a larger consort . So .... was this piece really meant to be OVPP?
IMHO, the big issues in the OVPP discussions in Bach cantatas are related to the problem of concertists and ripienists, and the problem of copy sharing. In the case of copy sharing it is very well possible that there were both concertists and ripienists. The concertists sang both in the choir parts and in the solo pieces, and in the choruses they were
joined by the ripienists. The number of original cantata scores that are still available nowadays only survived in OVPP. This would mean (for instance) that the ripienists were standing on the right and the left of the concertist, and were watching the score with him. (I think this is what Wolff and Koopman think is historically right.)
But we know that Bach complained about not having enough good singers. So some scholars think that in many cases he was forced to perform his cantatas in OVPP, and that this is the real reason why the the original scores only survived in OVPP. They believe that the amount of 16 or 12 good singers that Bach is writing about, had to be divided over the four Lutheran churches in Leipzig. (I think this is what Rifkin and Parrott believe.)
BTW: as far as I understand, in the non-OVPP theory, the concertists both sang the choir and the solo parts, which means that they had - indeed - a tough and busy singing job. So, as far as I'm concerned, the fact of an anecdotical evidence in the 20th/21st century "[....] when Rifkin did the B minor mass in live performance OOVP, the singers were all complaining about the stress to their vocal cords[....]" is no historical proof for the fact that the (rather shorter) Bach cantatas couldn't possibly be meant to be OVPP.
I would also like to add another thing. Most scholars (including Rifkin and Parrott, I believe) are searching for the historical truth. Composers wrote their music for the amount of musicians
available, not for the amount they were somehow wishing for. So, when Rifkin and Parrott say: Bach wrote his cantatas mainly for OVPP ensemble, this doesn't necessarely mean that Bach himself was extremely happy about that. They only try to give a historical
description, not a
prescription. But sure, they believe their assumptions are right, and that's why they want to perform these works in the same amounts of forces that Bach used. Personally, I don't see there is anything wrong with that. The problem is though: there are some followers of HIP-theories who are more R.C. than the pope. It somehow becomes a religion for them, and they call every freethinker a sinner. Unfortunately, this attitude is not very helpful for creating an interesting discussion, IMHO.
And one thing keeps puzzling me: if they really want it to sound as historically authentic as possible, why don't the sctrict OVPP-believers use (good) boy sopranos (and altos) for their ensembles?
Well, that's all, folks!
(For today, that is.)

I'm off to bed. I think my last choice of music today will be BWV 8
Liebster Gott, wenn werd' ich sterben?.
