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Electronic music is music produced using electronic instruments and electronic music technology; musicians who create or perform this type of music are called electronic musicians. In general, a distinction can be made between sounds produced using electromechanical techniques and those produced using electronic techniques.
Equipments that use electronic machinery to produce sound include telephonic harmonies, Hanmen-style electric organs, and electric guitars; while pure electronic sound-producing equipment includes theremins, sound synthesizers, and computers.
Electronic music was once almost entirely associated with Western, especially European, art music, but since the late 1960s, Moore's Law has created affordable music technology.
This means that the use of electronic means to produce music has become more and more popular and developed in popular fields in different countries and regions. Today's electronic music encompasses a variety and ranges from experimental art music to popular forms such as electronic dance music.
In 1876, engineer Elisha Gray patented an electromechanical oscillator. This "musical telegraph" evolved from his experiments with telephone technology and early surviving patents on electronic sound production. This oscillator was extended by Alexander Graham Bell for early telephones.
In 1878, Thomas Alva Edison further developed the phonograph from this oscillator, which was similar to Scott's device and used a piston. Although pistons continued to be used for a while, in 1887 Emile Bellina developed the disc-type phonograph.
The 3-pole vacuum tube invented by Lee De Forest in 1906 had a profound effect on subsequent electronic music. It was the first thermionic valve, or vacuum tube, which led to circuits that could create and amplify music signals, broadcast radio, calculate values, and perform a variety of other functions.