Pianos
The pianos in Zumpe's style were built from about 1760 to 1800. In Zumpe's day they played a role not unlike the upright piano of today: they were more compact and affordable than the full-size wing-shaped instrument. As such, they played an important role in the spread of the piano among musicians, particularly amateurs. By the time the last Zumpe pianos were made, the piano had essentially displaced the harpsichord from its formerly predominant position.
Johann Christian Bach performed on a Zumpe instrument, and possibly acted as a sales agent for Zumpe pianos. Although most famous for his square pianos, other Zumpe instruments survive, including full-sized pianos, harpsichords, an English guitar of 1762, and a mandora of 1764.
Read more about this topic: Johannes Zumpe