Parody on an unknown source. Must be assumed that model is Francesco da Milano, but no concordance can be found in the Ness edition. Long work of 178 compases, very free with countless motives which are not repeated. Hard to analyse.
At a guess, for Valderrabano is unpredictable, 72-76, 84-90, 160-178, show the hints of perhaps being the imitated material. I have isolated 7 motives which, subjectively, appear to draw attention to themselves.
The work proceeds without a break, not strongly emphasizing structure, and has a variety of contrapuntal and idiomatic textures.

parody model unidentified
perhaps needs checking with new Francesco material in Naples 1536, and Castelfranco.