The electronic keyboard can produce musical sounds by relying on a sound-generating device called an electronic oscillator.

An electronic oscillator is a combination of many transistors, resistors, capacitors and coils. Each electronic device can be adjusted to produce only a certain note. Dozens of such electronic oscillators are installed together. By pressing the keys on the electronic keyboard, they can be powered on one by one to emit the sound of a certain note. As long as the performer presses the keys according to the music score, he can play beautiful music.

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Music was produced about 35,000 years ago in prehistory. At that time, the monotonous humming of humans was considered the earliest music. Later, there were people who specialized in studying music. People carefully recorded various sounds with special symbols, forming regular and pleasant forms for people to appreciate, and gradually formed traditional music.

Notes are the starting point of music. A note is a regular air vibration created by a musician through an instrument or human voice. This regular vibration constitutes a section or unit of music.