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It is unlikely that the lightweight, light-sounding almost jangle of the supposedly "authentic" baroque harpsichord would have been heard in Bach's Germany. The German baroque harpsichord was considerably more substantial, both in construction and sound output, with a wider specification including 16' stop, and optionally equipped with a separate, organ-style pedalboard used for domestic organ practice.
Himself an enthusiastic amateur musician, Gottfried Zimmerman frequently re-equipped his establishment with the latest musical instruments for use by the Collegium and other musical guests. One of his prize possessions in the late 1720s was "a clavcymbel of large size and range of expressivity" which was a Leipzig attraction in itself. It was replaced by an "even finer instrument" in 1733. The baroque German harpsichord was undoubtedly a substantial and splendid instrument; our illustrations above (1722, Jena, Evening Concert) and right (by Bolcioni, 1627) show that three-manual instruments were by no means unknown.
Solid and Sonorous
Contemporary music critic and commentator Jakob Adlung wrote in 1738: "The most beautiful harpsichord which I saw was that which Herr Vogler, Burgomeister in Weimar, took me to see and hear, an instrument for which Herr Vogler had himself drawn up the specification. The harpsichord consisted of two choirs of 8' strings and one of 4', with a compass of six octaves. One of the 8' set was on the upper keyboard, and the others played from the lower keyboard. The sound board was so thick that it gave the impression of being unable to sound, and yet, I never heard an instrument which had a more beautiful sound than this one. The interior of the case was reinforced with many elements of iron, especially the side of the tail, where the tension of the strings is strongest." Burgomeister Vogler (1695?-1765) was a pupil and admirer of J.S.Bach. He was organist at the court of Weimar until appointed Burgomeister in 1735.
Bach would naturally have been familiar with the instruments of the major harpsichord builders of his time, preeminent among whom was the Hamburg builder Hieronymus Albrecht Hass (1689-1752). The Hass instrument on the left is now apparently owned by Rafael Puyana, who is seen here performing a Sonata by Scarlatti. Built in 1740, it has three manuals with couplers, five choirs of strings (1x16', 2x8', 1x4', 1x2') with a separate soundboard for the 16' choir, six rows of jacks, a lute stop and harp stop for the 16'. This fine instrument well represents the culmination of the German school. It has since been copied by Robert Goble & Son, Oxford.
Recent research has established that for his weekly concerts at Zimmermann' s Coffee House Bach had a double manual harpsichord (16', 3x8', 4') mounted on a pedal harpsichord (2x16', 3x8') made by Zacharias Hildebrandt, who was both harpsichord builder, and organ builder under the direction of Bach's friend and colleague Gottfried Silbermann.
The editor of these notes remembers having seen and heard a "Lautenclavicymbel" in Leipzig in about 1740, designed by Mr. Johann Sebastian Bach and made by Mr. Zacharias Hildebrand, which was smaller in size than a normal harpsichord but in all other respects similar. It had two choirs of gut strings, and a so-called little octave of brass strings. It is true that in its normal setting (that is, when only one stop was drawn) it sounded more like a theorbo than a lute. But if one drew the lute-stop (such as is found on a harpsichord) together with the cornet stop [?the 4' brass stop undamped], one could almost deceive professional lutenists."
The inventory of Bach's possessions at the time of his death reveals that he owned two such instruments, as well as three harpsichords, one lute and a spinet.
"Special Effects" foot pedals
Architecture was a very important element in German baroque music. Many of Bach's organ preludes for example, are planned like great buildings - a major theme element begins and ends the piece like supporting columns, while in between a noble arch decorated with recitative passages, a keystone forming the central point. These architectural elements, together with fugal entries, a change of phrase or mood, were signalled by changes of registration; thus harpsichords were equipped with two or three manuals, several choruses, and buff or lute effects. The ability to change registration with a quick depression or release of a footpedal would certainly have been put to good use.
In baroque Germany, organ and harpsichord builders - often one and the same - were excellent craftsmen and mechanics, fully capable of providing sophisticated devices to enhance the musical performances of their clients.
Summary
For performance today, the instruments of Pleyel, Wittmayer, Ammer, Sperrhake, Neupert, Feldberg, Dolmetsch and Goff represent fairly accurately the depth of sonority and gravitas Bach would have expected from his own harpsichords.
While many recording companies were swayed by the "authentic" movement into using lightweight instruments for Bach's, and for German baroque music, the
BAROQUE MUSIC CLUB has always favored what they believe to be the proper, substantial and sonorous instruments for this music. Check their catalog of 100 CDs, Bach and Baroque only! Available direct through the internet.
More information
The BAROQUE MUSIC HOME PAGE - www.BaroqueMusic.org
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