> > Any info on how they would have been used in ensembles There are duets - a fair number of duets. Some duets suggest a violin as an alternative to a second guittar and there are some duos specifically for guittar and violin, including a a sonata by J.C. Bach.
There are a few sets of trios for guittar, violin and 'cello (or keyboard). There are sonatas for guittar and figured bass. These are quite ambitious. As usual, almost everything is in C major or F major. To get on or off this list see list information at http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html
