"Thank you, Oliver, this is a most interesting news, one that will keep many of us busy for years to come. It is a welcome complement to the search function of TML (http://boethius.music.indiana.edu/tml/)."
"May I remind that the discussion, from the start, was about the Guidonian hand? It did turn to earlier periods (Hucbald and Musica enchiriadis), but only insofar as these prepared Guidonian theories. I do believe therefore that including it in here…"