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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:
IV-V-I-vi chord progression in C major: 4: Major I–V–vi–IV: I–V–vi–IV chord progression in C: 4: Major I–IV– ♭ VII–IV I–IV– ♭ VII–IV. 3: Mix. ii–V–I progression
|Cmaj7 B7 |Em7 A7 |Dm7 |G7 | (in this example, the B7 is the secondary dominant of Em7 and the A7 is the secondary dominant of Dm7) A chromatic passing chord is, "a chord that is not in the harmonized scale " [ 6 ] For example, one or more diminished seventh chords may be inserted:
The chord consists of a diminished triad plus the diminished seventh above the root. These four notes form a stack of three intervals which are all minor thirds.Since stacking yet another minor third returns to the root note, the four inversions of a diminished seventh chord are symmetrical.
I–V–vi–IV progression in C Play ⓘ vi–IV–I–V progression in C Play ⓘ. The I–V–vi–IV progression is a common chord progression popular across several music genres.
In major scales, a diminished triad occurs only on the seventh scale degree.For instance, in the key of C, this is a B diminished triad (B, D, F). Since the triad is built on the seventh scale degree, it is also called the leading-tone triad.
The On-line Guitar Archive (OLGA) was the first Internet library of guitar and bass tablature, or "tabs". Born from a collection of guitarist internet-forum archives, it was a useful resource for musicians of all genres for over a decade.
In music, a major seventh chord is a seventh chord in which the third is a major third above the root and the seventh is a major seventh above the root. The major seventh chord, sometimes also called a Delta chord, can be written as maj 7, M 7, Δ, ⑦, etc.