Marchetto/Vicentino

Interesting, Monz, you are confused by this. I would have thought you had
in place at least a plausible hypothesis by this time.

The Vicentino piece, Musica prisca caput, is in 4 parts and is complete.
The examples in Marchetto's Lucidarium are just examples.

But both spoke of the 5-parts of the tone in their works. I'd always
believed Marchetto was using a spiral of fifths-based tuning. I see his whole tone
as being made up of 2 sizes of half tones, which can be reversed when
arriving from the opposite direction. This makes for 4 points out of the 5
proposed. The final point of pitch is the apotome, so named by Marchetto, which
seems to mark the first description of a sharpened pitch for resolving up by
semitone, or the "leading" tone.

The Douglas Frank Chorale performed the Vicentino in just intonation.
Vicentino described tuning as an ascending set of 5 pitch points, 4 intervals, I
have always believed Vicentino was using the just intonation model for his
theoretical pitch references.

best, Johnny

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