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  2. Semitone - Wikipedia

    en.wikipedia.org/wiki/Semitone

    A semitone, also called a minor second, half step, or a half tone, [3] is the smallest musical interval commonly used in Western tonal music, [4] and it is considered the most dissonant [5] when sounded harmonically.

  3. 12 equal temperament - Wikipedia

    en.wikipedia.org/wiki/12_equal_temperament

    That resulting smallest interval, 1 ⁄ 12 the width of an octave, is called a semitone or half step. Twelve-tone equal temperament is the most widespread system in music today. It has been the predominant tuning system of Western music, starting with classical music , since the 18th century, and Europe almost exclusively used approximations of ...

  4. Interval (music) - Wikipedia

    en.wikipedia.org/wiki/Interval_(music)

    The exact size of such intervals depends on the tuning system, but they often vary from the diatonic interval sizes by about a quarter tone (50 cents, half a chromatic step). For example, the neutral second , the characteristic interval of Arabic music , in 24-TET is 150 cents, exactly halfway between a minor second and major second.

  5. Diatonic scale - Wikipedia

    en.wikipedia.org/wiki/Diatonic_scale

    The term leading tone is generally reserved for seventh degrees that are a half step (semitone) below the tonic, as is the case in the major scale. Besides the natural minor scale, five other kinds of scales can be obtained from the notes of a major scale, by simply choosing a different note as the starting note.

  6. Chromatic scale - Wikipedia

    en.wikipedia.org/wiki/Chromatic_scale

    The chromatic scale is a musical scale with twelve pitches, each a semitone, also known as a half-step, above or below its adjacent pitches. As a result, in 12-tone equal temperament (the most common tuning in Western music), the chromatic scale covers all 12 of the available pitches. Thus, there is only one chromatic scale.

  7. Quarter tone - Wikipedia

    en.wikipedia.org/wiki/Quarter_tone

    A quarter tone is a pitch halfway between the usual notes of a chromatic scale or an interval about half as wide (orally, or logarithmically) as a semitone, which itself is half a whole tone. Quarter tones divide the octave by 50 cents each, and have 24 different pitches. Trumpet with 3 normal valves and a quartering on the extension valve (right)

  8. Minor scale - Wikipedia

    en.wikipedia.org/wiki/Minor_scale

    This pattern of whole and half steps characterizes the natural minor scales. The intervals between the notes of a natural minor scale follow the sequence below: whole, half, whole, whole, half, whole, whole. where "whole" stands for a whole tone (a red u-shaped curve in the figure), and "half" stands for a semitone (a red angled line in the ...

  9. Musical note - Wikipedia

    en.wikipedia.org/wiki/Musical_note

    Accidental symbols visually communicate a modification of a note's pitch from its tonal context. Most commonly, [note 2] the sharp symbol (♯) raises a note by a half step, while the flat symbol (♭) lowers a note by a half step. This half step interval is also known as a semitone (which has an equal temperament frequency ratio of 12 √ 2 ≅