"I wonder whether the D-flat might actually be fa applied to the C that it stands above (see the B-flat at the beginning of the following staff). This would assist the solmization of the descent to the low D, with a mutation re/la on A."

"It was customary throughout the middle ages for books to be inventoried with the incipit of their SECOND folio, chiefly to distinguish different books that began the same (or whose contents were altogether the same), but partly in case the first…"

"Wonderful indeed! "