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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 tones, or omissions are usually also superscripted. For example, the major seventh chord built on C, commonly written as Cmaj 7, has pitches C–E–G–B:
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 ...
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 ...
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.
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).
In music, an augmented major seventh chord or major seventh sharp five chord is a seventh chord composed of a root, major third, augmented fifth, and major seventh (1, 3, ♯ 5, 7). It can be viewed as an augmented triad with an additional major seventh. When using popular-music symbols, it is denoted by e.g. + Δ 7.
Diminished major seventh chords are very dissonant, containing the dissonant intervals of the tritone and the major seventh.They are frequently encountered, especially in jazz, as a diminished seventh chord with an appoggiatura [citation needed], especially when the melody has the leading note of the given chord: the ability to resolve this dissonance smoothly to a diatonic triad with the same ...