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...

A quarter tone clarinet is an experimental clarinet designed to play music using quarter tone intervals. Around 1900, Dr. Richard H. Stein, a Berlin musicologist...

using quarter tones: A B C D E F G H I K L M N O P R S T W Y See also Notes Further reading Thomas Adès Asyla calls for an upright piano tuned a quarter-tone...

others, represent comma flat or eighth-tone flat, or a quarter of a flat (not to be confused with the larger quarter tone). Although very rarely used, a triple...

Septimal quarter tone on C Just minor third on C Problems playing these files? See media help. A septimal quarter tone (in music) is an interval with...

order to avoid the misnomer "quarter tone" when speaking of the srutis of Indian music. Prior to this time the term "quarter tone" was used, confusingly, not...

may be used: A half sharp, or demisharp, or quarter tone () raises a note by approximately a quarter tone = 50 cents (Play), and may be marked with various...

In Western music theory, a major second (sometimes also called whole tone or a whole step) is a second spanning two semitones (Play). A second is a musical...

quarter tone (50 cents). Each tone has its own name not repeated in different octaves, unlike systems featuring octave equivalency. The lowest tone is...

A semitone, also called a minor second, half step, or a half tone, is the smallest musical interval commonly used in Western tonal music, and it is considered...

pitches outside of standard notation. One such system for notating quarter tones, used by the Czech Alois Hába and other composers, is shown. In the...

tritone is defined as a musical interval spanning three adjacent whole tones (six semitones). For instance, the interval from F up to the B above it...

hand) to read familiar 12 tone notation. Various composers, including Charles Ives, experimented with music for quarter-tone pianos. 24 EDO also approximates...

of the perfect fifth, enabling the instrument to play in all keys. In 12-tone equal temperament, the frequencies of the tempered perfect fifth are in the...

compositions, including the quarter tone scale (24-tet: 50 cents) utilized in his pieces for two pianos in quarter tones. He also used scales of up to...

octave. Ratio 225:224 (7.7 cents). A quarter tone is half the width of a semitone, which is half the width of a whole tone. It is equal to exactly 50 cents...

systems being used depending on the situation. A common notation for quarter tones involves writing the fraction ¼ next to an arrow pointing up or down...

24 equal steps (24 equal temperament), where a quarter tone equals one-half of a semitone in a 12 tone equally-tempered scale. In this notation system...

especially using the quarter-tone scale, though he used others such as sixth-tones (e.g., in the 5th, 10th and 11th String Quartets), fifth-tones (Sixteenth String...

Demany, Laurent, and Françoise Armand. 1984. "The Perceptual Reality of Tone Chroma in Early Infancy". Journal of the Acoustical Society of America 76:57–66...

sadness in music, and research shows that this mirrors its use in speech, as a tone similar to a minor third is produced during sad speech. It is also a quartal...

five octaves, each divided into 24 quarter tones. Other notable composers who have written concertos for the quarter tone accordion include Jukka Tiensuu...

the terms ditone and semiditone are specific for Pythagorean tuning, while tone and tritone are used generically for all tuning systems. Despite its name...

cent is a logarithmic unit of measure used for musical intervals. Twelve-tone equal temperament divides the octave into 12 semitones of 100 cents each...

prime, or perfect prime) may refer to the (pseudo-) interval formed by a tone and its duplication (in German, Unisono, Einklang, or Prime), for example...

(5:4) major third in quarter-comma meantone. This is the source of the name: the note exactly halfway between the bounding tones of the major third is...

minor third (Play) in 12-tone equal temperament, but this does not hold true in most tunings. In any tuning close to quarter-comma meantone it will be...

above-mentioned quarter comma meantone, other tuning systems may produce severely dissonant diminished sixths. Conversely, in 12 tone equal temperament...

of major second which occur in 5-limit tuning: major tone (9:8, about 203.91 cents) and minor tone (10:9, about 182.40 cents). Namely, 9:8 ÷ 10:9 = 81:80...

fourth (Play) is the fourth spanning five semitones (half steps, or half tones). For example, the ascending interval from C to the next F is a perfect...