[QUOTE=Georgi]JS? JC? CPE?
CPE Bach wrote a Harpsichord Quartet in A Minor.
AFAIK JS Bach didn't write any harpsichord quartets, but I could very easily be wrong. [/QUOTE]
No, you're right. JS Bach didn't spend much time on the relatively new genre of chamber music for three or more instruments, which was only getting its first boost at that time from his French contemporary, Rameau. Similarly, the idea of middleclass burghers playing chamber music in well-bred homes didn't catch on for at least another generation. WF, CPE, JC and JCF Bach all wrote for combinations well-trained amateurs, in music of great sophistication.
10) Classical: A piece written for multiple harpsichords (4) by Bach.
Several Bachs wrote the very occasional piece for two harpsichords, and CPE, clever fellow that he was, wrote a Concerto for Harpsichord and FortePiano, the ancestor of the modern piano. But if it was four harpsichords, my guess is you're looking at a modern arrangement. The harpsichord was considered a solo instrument, or an accompaniment to groups of other instruments. Four harpsichords together would have been at best an intellectual puzzle to the baroque--how to make it all sound intelligible. Pleasure would never have entered into the picture.
