The invention of the synthesizer in the mid-20th century inspired composers and redesigned electronic music. The article on blog.oup revelased facts you need to know.
1. Electronic music was first attempted in the United States and Canada in the 1890s. Its creation process was difficult. To create just a few minutes of music, with perhaps a hundred different sounds, could take weeks to finalize.
2. The first true synthesizer was released to the public in 1956. It was made up of an array of electronic tone generators and processing devices that controlled the nature of the sounds.
3. That synthesizer played itself in traveling patterns that could be repeated or not. It was controlled by a system of brush sensors that responded to patterns of pre-punched holes on a rotating paper roll.
4. The most well-known and celebrated electronic pieces in the 1950s are Eimert’s Fünf Stücke, Stockhausen’s Gesang der Jünglinge, Krenek’s Spiritus Intelligentiae Sanctus, Berio’s Mutazioni, and Maderna’s Notturno.