hear some shifted vowels

Interesting clip on 16c/17c "original pronunciation":
https://www.youtube.com/watch?v=gPlpphT7n9s

Very interesting, indeed. Of course, the "original pronunciation" will always be an approximation.

But we can be confident that it's a close approximation. We have enough data for that.

>3 anglemark: Yes, I know.

Looking at the books we have in common, I believe you do.

But here's a bracing critique by Holger Syme of Original Pronunciation as a theatrical concept: http://www.dispositio.net/archives/1942 . (Scroll down to find the section on O.P., although the first part of the article is intersting too .)

I didn't read the entire paper, but what Syme missed about RP vs OP is that RP is pronounced more in the nose, and has fewer full-throated sounds, besides being non-rhotic. So to me the OP comes from a deeper place in the body.

Did he talk about the punning in OP?

Plus the Elizabethans and Jacobeans didn't have the school system that developed later, in which accent was more of a class marker and less of a regional one, in other words, "received".