Ric, > It goes so deep as to get out of the 12 note scale as Lindley , > New Groves, remarks, "According to Mersenne, Titelouze had a harpsichord > with 19 notes per octaved tuned in equal microtones -- the equilivent, as > it happens, of 1/3 comma mean-tone." How did they know this? 1/3SCM has pure 6/5's; Salinas, who published the first (known) description of this meantone reportedly had a 19-tone positive organ. Charles Luyton's(?) 'cembalo universale' has 19-tones per octave, while theorist and composer Guillaume Costeley advocated 19tET (as did Joseph Yasser in this century). Lynn Wood Martin's article on the 31-tone Sambuca lincea refers to 1/5 tones, properly 31tET but as likely it was tuned in 1/4SCM - their similarities which Christiaan Huygens brought to attention. 31-tone instruments include the Sambuca lincea, Vicentino's arcicembalo, the Harmoniehammerfluegel mentioned here a few months ago, and the organ at the Stichting Huygens-Fokker. Meantones can be worked out arithmetically. Clark
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