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Hexachord vs. Tetrachord

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Hexachordnoun

(music) A series of six tones denoted with the syllables ut-re-mi-fa-sol-la separated by seconds, the only of which that is a minor second being mi-fa.

Tetrachordnoun

(music) Any set of four different pitch classes.

Hexachordnoun

A series of six notes, with a semitone between the third and fourth, the other intervals being whole tones.

Tetrachordnoun

(music) A series of four sounds, forming a scale of two-and-a-half tones.

Hexachord

In music, a hexachord (also hexachordon) is a six-note series, as exhibited in a scale (hexatonic or hexad) or tone row. The term was adopted in this sense during the Middle Ages and adapted in the 20th century in Milton Babbitt's serial theory.

Tetrachordnoun

A scale series of four sounds, of which the extremes, or first and last, constituted a fourth. These extremes were immutable; the two middle sounds were changeable.

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Tetrachord

In music theory, a tetrachord (Greek: τετράχορδoν; Latin: tetrachordum) is a series of four notes separated by three intervals. In traditional music theory, a tetrachord always spanned the interval of a perfect fourth, a 4:3 frequency proportion (approx.

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