The proliferation of electricity in the 20th century led to a new category of Mélodieux 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 ration that produce sound pulsation picked up and amplified https://vente-de-violons-wolf-57890.develop-blog.com/35164934/une-arme-secrète-pour-instruments-de-musique