Organ History
Early 15th century chromatic keyboard lower drone key church model.
Historical, but fundamentally obsolete reed pipes: 1 Sordun 2 Knopfregal 3. Apfelregal 4 Krummhorn (from instrument) 5 Schalmei (from instrument) 6 Barpfeife 7 Messingregal 8 Ranket 9 Jeu Erard Reeds, are the most unstable of all sound producing pipes in the organ. The tone can skip, becomes muffled and sickly, rattle, jump in pitch up or down more than an octave German Organ builder says Schnarrwerk Narrwerk (Reed-work -- fool-work)
Hammond Tone Wheel
Hammond B3
Hammond M3
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