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In jazz theory, an avoid note is a scale degree which is considered especially dissonant relative to the harmony implied by the root chord, and is thus better avoided. In major-key tonality the avoid note is the fourth diatonic scale step , or 11th, which is a minor ninth above the 3rd of the chord, and thus very harsh. [ 1 ]
For example, in major-key harmony the 4th, and thus the 11th, is an avoid note and is therefore either treated as a passing tone or is augmented (raised a semitone). [4] Avoid notes are often a minor second (or a minor ninth) above a chord tone [5] or a perfect fourth above the root of the chord. [6]
Students now typically learn as many as twenty-one scales, which may be compared with the four scales commonly used in jazz in the 1940s (major, minor, mixolydian, and blues) and the two later added by bebop (diminished and whole-tone) to the tonal resources of jazz. [8] The corresponding scale for the C 7 ♯ 11 chord, with added ninth and ...
The term side-slipping or side-stepping has been used to describe several similar yet distinct methods of playing outside. In one version, one plays only the five "'wrong'" non-scale notes for the given chord and none of the seven scale or three to four chord tones, given that there are twelve notes in the equal tempered scale and heptatonic scales are generally used. [3]
The lower note is a constant A (440 Hz in either scale), the upper note is a C ♯ in the equal-tempered scale for the first 1", and a C ♯ in the just intonation scale for the last 1". Phase differences make it easier to detect the transition than in the previous sample.
"The number of the notes that make up a scale as well as the quality of the intervals between successive notes of the scale help to give the music of a culture area its peculiar sound quality." [6] "The pitch distances or intervals among the notes of a scale tell us more about the sound of the music than does the mere number of tones." [7]
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Fourth factor (F), in red, of a C suspended fourth chord, C sus4 (play ⓘ).. The fourth degree is octave equivalent to the eleventh. The dominant eleventh chord could be alternatively notated as the very unorthodox ninth added fourth chord (C 9add4), from where omitting the 3rd produces the more common ninth suspended fourth chord (C 9sus4, also known as the jazz sus chord).