The less complex method treats the leading tone as the root of the chord and the other chord members as the third, fifth, and seventh of the chord, the same way other seventh chords are analyzed. Currently, two approaches are generally used. Music theorists have struggled over the centuries to explain the meaning and function of diminished seventh chords. In most sheet music books, the notation Cdim or C o denotes a diminished seventh chord with root C but it may also happen, mostly in modern jazz books and some music theory literature, that Cdim or C o denotes a diminished triad (more commonly denoted Cm ♭5), while Cdim 7 or C o 7 in these books denotes a diminished seventh chord (corresponding to Cm 6 ♭5).įrançois-Joseph Fétis tuned the chord 10:12:14:17 ( 17-limit tuning). It typically has dominant function and contains two diminished fifths, which often resolve inwards. The diminished seventh chord occurs as a leading-tone seventh chord in the harmonic minor scale. Since a diminished seventh interval is enharmonically equivalent to a major sixth, the chord is enharmonically equivalent to (1, ♭3, ♭5, ♮6).

Because of this, it can also be viewed as four notes all stacked in intervals of a minor third and can be represented by the integer notation. You can download the audio file.Īs such, a diminished seventh chord comprises a diminished triad plus a diminished seventh.

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