acoustic instrument

n. musical instrument (such as: guitar, piano, drums, brass and more ) that produces vocal sound and does not use electronics

Acoustic music refers to music that solely or primarily uses instruments which produce sound through entirely acoustic means, as opposed to electronic means. Given that electronic instruments are a very recent invention in the history of music, almost all musical instruments are acoustic and subsequently almost all music. The term "acoustic music" is a retronym, coined after the advent of electric instruments, such as the electric guitar, Hammond organ and the synthesiser.
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