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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. The "7" does not have to be superscripted, but if it is, then any alterations, added ...
The dominant seventh chord is frequently used to approximate a harmonic seventh chord, which is one possible just tuning, in the ratios 4:5:6:7 [1] Play ⓘ, for the dominant seventh. Others include 20:25:30:36 Play ⓘ , found on I, and 36:45:54:64, found on V, used in 5-limit just tunings and scales.
In this case, the chord is viewed as a C major seventh chord (CM 7) in which the third note is an augmented fifth from root (G ♯), rather than a perfect fifth from root (G). All chord names and symbols including altered fifths, i.e., augmented (♯ 5, +5, aug5) or diminished (♭ 5, o 5, dim5) fifths can be interpreted in a similar way.
0 3 7: Minor Dominant seventh chord: ... 1 2 8 0 3 6 7 t e 4 7: ... List of musical scales and modes; List of set classes; Ninth chord;
The most common chords are tertian, constructed using a sequence of major thirds (spanning 4 semitones) and/or minor thirds (3 semitones). Since there are 3 third intervals in a seventh chord (4 notes) and each can be major or minor, there are 7 possible permutations (the 8th one, consisted of four major thirds, results in a non-seventh augmented chord, since a major third equally divides the ...
7 indicates a dominant seventh chord. However, if Maj7, M7 or Δ 7 is indicated, this is a major 7th chord (e.g., G M7 or F Δ7). Very rarely, also dom is used for dominant 7th. 9 indicates a ninth chord, which in jazz usually includes the dominant seventh as well, if it is a dominant chord.
A minor major seventh chord, or minor/major seventh chord (also known as the Hitchcock Chord) is a seventh chord composed of a root, minor third, perfect fifth, and major seventh (1, ♭ 3, 5, and 7). It can be viewed as a minor triad with an additional major seventh. When using popular-music symbols, it is denoted by e.g. m (M7).
For example, B and F, the third and seventh of a G7 chord, are enharmonic equivalents of C ♭ and F, the seventh and third of a D ♭ 7 chord. Since the tritone is a distinguishing feature of the sound of a dominant 7th chord, [5] a D ♭ 7 chord may thus replace G7.