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- Q5659286 subject Q8289753.
- Q5659286 subject Q8733475.
- Q5659286 abstract "The harmonic seventh chord is a major triad plus the harmonic seventh interval (ratio of 7:4, about 968.826 cents). This interval is somewhat narrower (about 48.77 cents, a septimal quarter tone) and is "sweeter in quality" than an "ordinary" minor seventh, which has a just-intonation ratio of 9:5 (1017.596 cents), or an equal-temperament ratio of 1000 cents (25/6:1). Frequent use of this chord is one of the defining characteristics of blues and barbershop harmony; barbershoppers refer to it as "the barbershop seventh". Since barbershop music tends to be sung in just intonation, the barbershop seventh chord may be accurately termed a harmonic seventh chord. The harmonic seventh chord is also widely used in "blues flavored" music. As guitars, pianos, and other equal-temperament instruments cannot play this chord, it is frequently approximated by a dominant seventh chord. As a result it is often called a dominant seventh chord and written with the same symbols (such as the blues progression I7 - V7 - IV7). A frequently encountered example of the harmonic seventh chord is the last word of the "...and many more!" modern addition to the song "Happy Birthday to You" When sung by professional singers, the harmony on the word "more" typically takes the form of a harmonic seventh chord.The alpha scale has, "excellent harmonic seventh chords...using the inversion of 7/4, i.e., 8/7." About this sound Play .It is suggested that the harmonic seventh on the dominant not be used as a suspension, since this would create a mistuned fourth over the tonic. The harmonic seventh of G, F7+, is lower than the perfect fourth over C, F♮, by Archytas' comma (27.25 cents). 22 equal temperament avoids this problem because it tempers out this comma, while still offering a reasonably good approximation of the harmonic seventh chord.".
- Q5659286 thumbnail Harmonic_seventh_chord_on_C.png?width=300.
- Q5659286 wikiPageWikiLink Q1021249.
- Q5659286 wikiPageWikiLink Q1102404.
- Q5659286 wikiPageWikiLink Q1411564.
- Q5659286 wikiPageWikiLink Q167545.
- Q5659286 wikiPageWikiLink Q170439.
- Q5659286 wikiPageWikiLink Q17087918.
- Q5659286 wikiPageWikiLink Q189962.
- Q5659286 wikiPageWikiLink Q1971526.
- Q5659286 wikiPageWikiLink Q2372455.
- Q5659286 wikiPageWikiLink Q2640962.
- Q5659286 wikiPageWikiLink Q3114278.
- Q5659286 wikiPageWikiLink Q3344470.
- Q5659286 wikiPageWikiLink Q4735173.
- Q5659286 wikiPageWikiLink Q4859620.
- Q5659286 wikiPageWikiLink Q723441.
- Q5659286 wikiPageWikiLink Q724178.
- Q5659286 wikiPageWikiLink Q7452277.
- Q5659286 wikiPageWikiLink Q7452285.
- Q5659286 wikiPageWikiLink Q752518.
- Q5659286 wikiPageWikiLink Q807820.
- Q5659286 wikiPageWikiLink Q8289753.
- Q5659286 wikiPageWikiLink Q8733475.
- Q5659286 wikiPageWikiLink Q920305.
- Q5659286 wikiPageWikiLink Q9759.
- Q5659286 comment "The harmonic seventh chord is a major triad plus the harmonic seventh interval (ratio of 7:4, about 968.826 cents). This interval is somewhat narrower (about 48.77 cents, a septimal quarter tone) and is "sweeter in quality" than an "ordinary" minor seventh, which has a just-intonation ratio of 9:5 (1017.596 cents), or an equal-temperament ratio of 1000 cents (25/6:1).".
- Q5659286 label "Harmonic seventh chord".
- Q5659286 depiction Harmonic_seventh_chord_on_C.png.