hi,
I have revised and uoloaded M.Praetorius duets and trios. IMSLP don't want to listen them seperatly. So You will find them under Terpsichore. here is the link http://imslp.org/wiki/Terpsichore,_Musarum_Aoniarum_%28Praetorius,_Michael%29 Anton -- To get on or off this list see list information at http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html