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The half-diminished seventh chord is frequently used in passages that convey heightened emotion. For example, the "mournful affect" [5] of the sombre opening Chorus of J. S. Bach's St Matthew Passion (1727) features the chord on the seventh beat of its first bar and on the first beat of its third bar:
A half-diminished seventh chord is a seventh chord built from the seventh degree of a major scale. It is considered "half-diminished" because a fully diminished seventh has a double-flatted (diminished) seventh, making it enharmonically the same as a major sixth. The half-diminished seventh chord uses a minor seventh over the root of a ...
Diminished Diminished seventh chord (leading-tone and secondary chord) Play ... Half-diminished seventh chord: Play ...
The half diminished scale is a seven-note musical scale. It is more commonly known as the Locrian ♯ 2 scale [1] or the Aeolian ♭ 5 scale, names that avoid confusion with the diminished scale and the half-diminished seventh chord (minor seventh, diminished fifth).
Five of the most common seventh chord, all built on C: major (C Δ7), dominant (C 7), minor (C– 7), half-diminished (C ø 7), and diminished (C o 7) A seventh chord is a triad with a seventh . The seventh is either a major seventh [M7] above the root, a minor seventh [m7] above the root (flatted 7th), or a diminished seventh [d7] above the ...
The leading-tone seventh chords are vii ø 7 and vii o 7, [24] the half-diminished and diminished seventh chords on the seventh scale degree of the major and harmonic minor. For example, in C major and C minor, the leading-tone seventh chords are B half-diminished (B–D–F–A) and B diminished (B–D–F–A ♭), respectively.
The diminished seventh chord is a four-note chord (a seventh chord) composed of a root note, together with a minor third, a diminished fifth, and a diminished seventh above the root: (1, ♭ 3, ♭ 5, 7). For example, the diminished seventh chord built on B, commonly written as B o 7, has pitches B-D-F-A ♭:
The half-diminished seventh chord contains the same tritone, while the fully diminished seventh chord is made up of two superposed tritones a minor third apart. Other chords built on these, such as ninth chords , often include tritones (as diminished fifths).