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,
Pena (musical instrument) in Manipur. The Center for Research on Traditional and Indigenous Art (Laihui), an organization headed by renowned Pena player, Khangembam Mangi Singh, has mandated vision to revive Pena music. The Pena, the oldest Meetei musical instrument, was once considered as a part of luxurious living and was played at the royal gatherings. However, the instrument slowly got associated with the folk culture of Manipur and Bangladesh where it became a regular presence at the festivals. Manipuri festival of Lai Haraoba fostered the use of the instrument considerably. Later, it also made its presence in the folk theatre. It is generally