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In music theory, the dominant seventh flat five chord is a seventh chord composed of a root note, together with a major third, a diminished fifth, and a minor seventh above the root (1, ♮ 3, ♭ 5 and ♭ 7). For example, the dominant seventh flat five chord built on G, commonly written as G 7 ♭ 5, is composed of the pitches G–B–D ♭ –F:
Dominant seventh chords are often built on the fifth scale degree (or dominant) of a key. For instance, in the C major scale, G is the fifth note of the scale, and the seventh chord built on G is the dominant seventh chord, G 7 (shown above). In this chord, F is a minor seventh above G.
The diminished seventh chord is seen more frequently in late classical and romantic period works but is also found in Baroque and Renaissance period works, though not as frequently. All of the elements of the diminished seventh chord can be found in the dominant seventh flat nine (7 ♭ 9) chord as seen in a comparison of the two chords.
C – Am – Dm – G 7. This chord progression instructs the performer to play, in sequence, a C major triad, an A minor chord, a D minor chord, and a G dominant seventh chord. In a jazz context, players have the freedom to add sevenths, ninths, and higher extensions to the chord. In some pop, rock and folk genres, triads are generally ...
The tritone substitution can be performed by exchanging a dominant seventh chord for another dominant seventh chord which is a tritone away from it. For example, in the key of C major one can use D ♭ 7 instead of G 7 (D ♭ is a tritone away from G, and G is the dominant of C).
barbershop seventh chord. A chord consisting of the root, third, fifth, and flatted seventh degrees of the scale. It is characteristic of barbershop arrangements. When used to lead to a chord whose root is a fifth below the root of the barbershop seventh chord, it is called a dominant seventh chord. Barbershoppers sometimes refer to this as the ...
This generally occurs in a major key, since the flattening of the sixth degree in the natural minor scale renders a dominant diminished seventh chord fully diminished if played within the scale. Indeed, the VII half diminished chord in a major key is identical to a dominant ninth chord (a dominant seventh with a major ninth) with its root omitted.
Seventh (F), in red, of a G7 dominant seventh chord in C Third inversion G7 chord; the seventh is the bass. In music, the seventh factor of a chord is the note or pitch seven scale degrees above the root or tonal center. [1] When the seventh is the bass note, or lowest note, of the expressed chord, the chord is in third inversion Play ⓘ.