Thirds are a term in music that refer to the relationship between three tones.

Thirds are divided into major thirds and minor thirds. The so-called major third refers to the relationship between three tones, which is the relationship of whole tones. That is, there are two whole tones, which is the major third. The minor third means that the three tones are composed of a whole tone and a semitone.

Extended information

Examples of the major third:

For example, do to mi, do and re are whole tones, and re and mi are whole tones. Do and mi are the relationship between major thirds. Major thirds and minor thirds are the most basic units that constitute major and minor triads.

Examples of minor thirds:

From re to fa, re and mi have a whole-tone relationship, and mi and fa have a semi-tone relationship. So re and fa form a minor third. The minor third is also the basis of the minor triad.

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