Mathias wrote... Okay, found it out. The term was invented in the 20th century. No Erzlaute in Grimm's dictionary. The term may sound ancient in German, but in fact it is an artificial term, created in order to categorize types of lutes. I'd say, forget Erzlaute.
Ersatzlaute perhaps? Ron (UK) To get on or off this list see list information at http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html
