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,
Musical Instrument Museum (Brussels) in Brussels. With the arrival of the esteemed Latinist Roger Bragard, curator between 1957 and 1968, larger budgets became available from the Ministry of Culture, as exhibits were renovated, new personnel were hired, concerts were again organised, and new rare pieces were collected. His efforts were pursued by his successors René de Maeyer (1968–1989), (1989–1995), and Malou Haine (1995–2009). The museum's collection presents Belgian musical history (including Brussels' importance in the making of recorders in the 18th and 19th centuries and as the home of instrument inventor Adolphe Sax in the 19th century), European musical traditions, and non-European instruments. Mechanical