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2. Harmonic seventh chord - Wikipedia

   en.wikipedia.org/wiki/Harmonic_seventh_chord

   The harmonic seventh chord is a major triad plus the harmonic seventh interval (ratio of 7:4, about 968.826 cents [1]). This interval is somewhat narrower (about 48.77 cents flatter, a septimal quarter tone ) and is "sweeter in quality" than an "ordinary" [ 2 ] minor seventh , which has a just intonation ratio of 9:5 [ 3 ] (1017.596 cents), or ...

3. Harmonic seventh - Wikipedia

   en.wikipedia.org/wiki/Harmonic_seventh

   The harmonic seventh arises from the harmonic series as the interval between the fourth harmonic (second octave of the fundamental) and the seventh harmonic; in that octave, harmonics 4, 5, 6, and 7 constitute the four notes (in order) of a purely consonant major chord (root position) with an added minor seventh (or augmented sixth, depending ...

4. 7-limit tuning - Wikipedia

   en.wikipedia.org/wiki/7-limit_tuning

   For example, the greater just minor seventh, 9:5 (Play ⓘ) is a 5-limit ratio, the harmonic seventh has the ratio 7:4 and is thus a septimal interval. Similarly, the septimal chromatic semitone, 21:20, is a septimal interval as 21÷7=3. The harmonic seventh is used in the barbershop seventh chord and music.

5. Seventh chord - Wikipedia

   en.wikipedia.org/wiki/Seventh_chord

   The most common chords are tertian, constructed using a sequence of major thirds (spanning 4 semitones) and/or minor thirds (3 semitones). Since there are 3 third intervals in a seventh chord (4 notes) and each can be major or minor, there are 7 possible permutations (the 8th one, consisted of four major thirds, results in a non-seventh augmented chord, since a major third equally divides the ...

6. Category:Seventh chords - Wikipedia

   en.wikipedia.org/wiki/Category:Seventh_chords

   Printable version; In other projects ... Pages in category "Seventh chords" ... Half-diminished seventh chord; Harmonic seventh chord; M. Major seventh chord; Seven ...

7. List of chords - Wikipedia

   en.wikipedia.org/wiki/List_of_chords

   Approach chord; Chord names and symbols (popular music) Chromatic mediant; Common chord (music) Diatonic function; Eleventh chord; Extended chord; Jazz chord; Lead sheet; List of musical intervals; List of pitch intervals; List of musical scales and modes; List of set classes; Ninth chord; Open chord; Passing chord; Primary triad; Quartal chord ...