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 ration that produce sound pulsation picked up and amplified https://spencerlprst.blogdanica.com/28841361/5-États-de-simple-sur-magasin-instruments-de-musique-belgique-expliqué