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"Hass" |
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| Recent musicological research has shown that Johann Sebastian
Bach explicitly required in fact a harpsichord with 16'-register for chamber
music, including a pedal harpsichord below it with two 16'-registers. For
his weekly concerts at the "Zimmermannschen Kaffeehaus" he had a double
manual harpsichord and a pedal harpsichord at his disposal, both made by
Zacharias Hildebrand.
In order to do justice to the consequences for performance practice, NEUPERT developed a new 16'-harpsichord within the historical tradition. As a prototype NEUPERT chose a double manual harpsichord of J. S. Bach's famous contemporary Hieronymus Albrecht Hass (Hamburg 1734). This instrument today belongs to the collection of the Brussels museum. Without straying from the original conception, NEUPERT adapted the prototype to the requirement of the today's performance practice. The compass of the keyboard was extended to five octaves (F1-f3) and a further coupler allows one to play the 4'-register on the lower as well as on the upper keyboard. In addition this also permits the upper manual to offer a contrast to the full disposition of the lower keyboard, to play an "echo", using only the 82'-register. A transposing device renders a quick change posssible between the pitches a1 = 415 Hz and a1 = 440 Hz.
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