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Electronic musical instruments

An electronic musical instrument is a musical instrument that produces its sounds using electronics.
Some of them may include a user interface for controlling its sound, often by adjusting the pitch, frequency, or duration of each note.
However, it is increasingly common to separate user interface and sound-generating functions into a music controller (input device) and a music synthesizer.
Electronic musical instruments are now widely used in most styles of music.

An electric guitar is a guitar that uses a pickup to convert the vibration of its strings into electrical impulses.
The most common guitar pickup uses the principle of direct electromagnetic induction.
Since the output of an electric guitar is an electric signal, the signal may easily be altered using electronic circuits to add "color" to the sound.
Often the signal is modified using effects such as reverb and distortion.
It was invented in 1931, during the jazz era.
During the 1950s and 1960s, the electric guitar became the most important instrument in pop music.