Dominant Seventh Chord

In music theory, a dominant seventh chord, or major minor seventh chord, is a chord composed of a root, major third, perfect fifth, and minor seventh. It can be also viewed as a major triad with an additional minor seventh. It is denoted using popular music symbols by adding a superscript "7" after the letter designating the chord root. The dominant seventh is found almost as often as the dominant triad. In Roman numerals it is represented as V7. The chord can be represented by the integer notation {0, 4, 7, 10}.

dominant seventh chord
Component intervals from root
minor seventh
perfect fifth
major third
root
Forte number or Tuning
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Of all the seventh chords, perhaps the most important is the dominant seventh. It was the first seventh chord to appear regularly in classical music. The name comes from the fact that it occurs naturally in the seventh chord built upon the dominant (i.e. the fifth degree) of a given major diatonic scale. Take for example the C major scale (C, D, E, F, G, A, B, C):

The note G is the dominant degree of C major - its fifth note. When we arrange the notes of the C major scale in ascending pitch and use only these notes to build a seventh chord, and we start with G (not C), then the resulting chord contains the four notes G-B-D-F and is called G dominant seventh (G7). The note F is a minor seventh from G, and it is also called the dominant seventh with respect to G. However, the 'dominant' seventh is used on notes other than the dominant, such as the subdominant.

Read more about Dominant Seventh ChordFunction, History, Voice Leading, Dominant Seventh Chord Table

Other articles related to "chord, dominant seventh chord, seventh":

Piano Quartet No. 3 (Brahms) - Fourth Movement
... The piano plays a broken A♭ major chord, followed by a broken A♭ minor chord that is used to make a transition to E♭ major ... soar to an unexpectedly high register, the piano interrupts by playing an explosive broken dominant seventh chord ... Rather than accompanying this theme, the piano plays a descending broken chord after each utterance ...
Dominant Seventh Chord Table
... Chord Root Major Third Perfect Fifth Minor Seventh C7 C E G B♭ C♯7 C♯ E♯ (F) G♯ B D♭7 D♭ F A♭ C♭ (B) D7 D F♯ A C D♯7 D♯ F (G) A♯ C♯ E♭7 E♭ G B ...

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