Gene Krupa in Calumet City, Illinois. In the 1930s, Krupa became the first endorser of Slingerland drums. At Krupa's urging, Slingerland developed tom-toms with tuneable top and bottom heads, which immediately became important elements of virtually every drummer's setup. Krupa developed and popularized many of the cymbal techniques that became standards. His collaboration with Avedis Zildjian developed the modern hi-hat cymbals and standardized the names and uses of the ride cymbal, crash cymbal, splash cymbal. He is also credited with helping to formulate the modern drum set, being one of the first jazz drummers (for that recording studio) to use a bass
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,