Monothematic fantasia on: ut re ut fa mi vt re mi re.
Pisador intimates that this equals “el seculorum”. The single theme is present in equal voiced polyphony during most of the 98 compás work, and appears in all voices. The work proceeds:
B / T >> A >> S >> T |free| T A S (sharing theme) >> S >> 2 free phrases in paired voices >> T – A >> |free| >> A |free|>> A – S – A.|| The theme appears in 3 positions: beginning on C, G, A.
The rhythmic disposition of the theme varies quite a bit, and thus gives variety.
The work as a whole is quite well put together, and shows considerable polyphonic skill with flaws in 2 areas: the overall tonal concept, and voice leading detail, particularly at cadences. The tonality stays fairly close to D, but some occasional minor digressions save it from monotony. Some of the chord sequences are a little odd, yet don’t stick out as major flaws. There are several places where voice leading is a little strange, and several awkward cross relations (refer to my transcription). In all, the work is quite presentable. It has quite a full texture throughout, the voice pairing technique is not used much, other than the beginning and a small interlude >> the work is quite exacting to perform smoothly.
I would have called the piece mode 1. The S is mode 1, but perhaps Pisador has gone from the Bass.
There are a number of atypical interrupted cadences.