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Viscount Physis Organs Reference Manual
KIRNBERGER III
Based on four fifths, each one reduced by ¼ of syntonic comma, and one fifth reduced of the remaining
skisma. There is only one pure major third on C. From most to least pure, they are G, D, A and F, Bb, Eb. E,
B and F# are equivalent one with the other. Pythagorean major thirds are on C# and G#. Pieces with many
alterations are well characterised.
Kirnberger III
WERCKMEISTER IV
Based on five fiths, each reduced of 1/3 of Pythagorean comma, and two more thirds increased of the same
amount. Very pleasant with mostly unaltered tonalities, it becomes “harder” as the alterations increase.
Werckmeister IV
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