Gavioli

Giacamo's hobby was the development of automatic playing musical instruments like bird organs and flute clocks.

His son Lodovico Gavioli (1807–1875) was a very clever inventor; he built a large orchestrion organ the "Panharmonico" for the Duke of Modena, who refused to buy the instrument.

In 1878 he invented the frein, a piece of metal that allowed pipes to produce a sound similar to a cello or violin.

Up until this point, pipe organs were played by a large wooden cylinder, using a system akin to the modern musical box.

The Steam Carousel in the Efteling theme park in the Netherlands features one of the many surviving Gavioli organs.