The proliferation of electricity in the 20th century led to a new category of musical instruments: electronic instruments, or electrophones.[114] The vast majority produced in the first half of the 20th century were what Sachs called "electromechanical instruments"; they have mechanical parts that produce sound battement picked up and amplified https://sb-bookmarking.com/story17798567/une-arme-secr%C3%A8te-pour-instruments-de-musique