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 martèlement picked up and amplified https://holdengnswz.wikikarts.com/864492/les_magasin_instruments_de_musique_belgique_diaries