Experimental musical instrument including intonarumori ("intoners" or "noise machines"), to create "noises" for performance. Unfortunately, none of his original intonarumori survived World War II. Replicas are being made though. Léon Theremin was a Russian inventor, most famous for his invention of the theremin around 1919–1920, one of the first electronic musical instruments. The Ondes Martenot is another early example of an electronic musical instrument. The luthéal is a type of prepared piano created by George Cloetens in the late 1890s and used by Maurice Ravel in his "Tzigane" for luthéal and violin. The instrument can produce sounds like a guitar or a harmonica,
Gulbransen (musical instrument manufacturer) Gulbransen (musical instrument manufacturer) Gulbransen Company was a musical instrument manufacturer of player pianos and home organs in the United States. It also made reed organs. It was originally established in 1904 by Axel Gulbransen as "Gulbransen Piano Company". In the history of musical instruments, Gulbransen is notable for several innovations. In its early years, Gulbransen made the first upright piano with a player piano mechanism in the same case. In the 1920s, thousands of player pianos were manufactured by the firm under the Gulbransen and Dickinson name. In the electronic organ era, Gulbransen pioneered several innovations in the production