Meantone temperament

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Meantone temperament is a musical tuning system. In meantone temperament the size of perfect fifths is reduced in order to improve the intonation of thirds. The system derives its name from the geometric mean used to split the major third into two equal tones. The technique includes a wide variety of tuning solutions. Meantone temperament was in use as early as the 15th century, remained common into the 19th, and is still in limited use today.

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