Elizabeth:

 

"Singing Early Music," ed by Tim McGhee.  Indiana University Press, It think.

 

John

 

 

Here's an Amazon link to the book John recommended:

 but you should know that this is a very detailed work which will give different answers for different periods of history and different regions of Germany and Austria. If this is too much detail, you might prefer the synopsis at the beginning of Translations and Annotations of Choral Repertoire: Vol. 1: Sacred Latin Texts (Translations & Annotations of Choral Repertoire). Or maybe somebody can suggest a website.

 

Here's one:

Singing in Latin, by Harold Copeman, pub. Oxford by the author.  In-depth treatment of several different vernacular Latin pronunciations, with historical background and justification for choices.  Skeleton keys make it a reasonably easy reference too.

 

best, Paul

The McGhee book recommended by John Howell is excellent, and I use it all the time.  It's not just about German Latin, but covers many countries' pronunciation of a number of languages and periods.  In other words, you not only get "English Latin" but also "English English", and McGhee notes the evolution of pronunciation in some very useful charts...i.e., shows you how a particular vowel sound changed from 1200 through 1700, etc.

 

Copeman's book was not easy to find, last time I tried.  McGhee refers to Copeman quite frequently, btw.

 

LKent

One more resource, by Vera Scherr: "Aufführungspraxis Vokalmusik: Handbuch der lateinischen Aussprache" (Bärenreiter, 2002).  It's in German but has some use if you don't read a word of the language --- there's an IPA rendering of the entire Credo of the Mass in both Germanic and Italianate Latin, as well as the Magnificat and some other texts.  Interesting that the chapter on Germanic Latin in the McGee book was written by Copeman and Scherr.  This is a newer work of Scherr's, and she comes to some different conclusions, most notably concerning the pronunciation of "s," which she says should not be pronounced [z], even between 2 vowels --she chalks the [z] up to a regional variation and recommends against it.

 

There's a nice forward by Helmut Rilling, too.