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,
Washboard (musical instrument) captured by a small clip-on microphone. The sound is then sent through a wah-wah and other effects pedals to create a fresher, more innovative and up-to-date sound for the washboard. A frottoir is played with a stroking instrument (usually with spoon handles or a pair of bottle-openers) in each hand. In a 4-beat measure, the frottoir will be stroked 8 to 16 times. It plays more like a Latin percussion instrument, rather than as a drum. The rhythms used are often similar to those played on Guiro. Actor Deryck Guyler was well known for his washboard-playing skills. Washboard (musical instrument)