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Music theory basics · updated 2026-08-16

EQUAL TEMPERAMENT

The tuning system that splits the octave into twelve equal semitones so every key sounds usable, at the cost of pure intervals.

Close-up of handwritten sheet music and a pencil on a piano music desk

SOURCES AND CITATIONS

Free, primary references for equal temperament — standards bodies, manufacturers, government offices and university course material.

RELATED TERMS IN MUSIC THEORY BASICS

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