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Orgelwerke von Johann Sebastian Bach 1685-1750

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Das Orgel-Büchlein

Leipziger Choräle

Deutsche Orgel-Messe

Choräle aus der Sammlung Kirnbergers

Andere / others

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Orgelwerke von Johann Pachelbel 1653-1706

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Choral-Vorspiele

Andere / others

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Klavierwerke von Johann Sebastian Bach

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12 kleine Präludien

6 kleine Präludien

Präludien und Fugen

Inventionen und Sinfonien

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Appendix

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figure(ft.)

Making organ sound for GM-tone-map sound modules

Simulating mutation stops (see below) of the organ, I use instruments in 2 or 3 pitches, mainly 8' + 2 2/3'. In some files, I also use tone of PanFlute in short duration to make attack-sound of Rohrflöte and Gedackt.

About indication of pitches in ft.

Foundamental pitch is called “ 8' ”. This is from the length of an open pipe of which native frequency equals to the note “C”. Organ stops that have fractional pitches are called “mutation stops” (“Aliquot” in German). Their frequencies are multiplied by numbers except powers of 2. For example, a 2 2/3' ( = 8/3') stop has pipes of which frequencies are multiplied by 3, inversely proportionate to the ratio of lengths.

pitch interval setting
1 3/5' 2 octaves + 386 cent note shift: + 2 octaves
& pitch bend: +2635
2 2/3' 1 octave + 702 cent note shift: + 1 octave
& pitch bend: +4792
pitch bend sensitivity 1200 cent ( 1 oct.) / 8192