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A major triad has a major third (M3) on the bottom, a minor third (m3) on top, and a perfect fifth (P5) between the outer notes. In harmonic analysis and on lead sheets, a C major chord can be notated as C, CM, CΔ, or Cmaj. A major triad is represented by the integer notation {0, 4, 7}.
For example, G major and D major have 4 chords in common: G, Bm, D, Em. This can be easily determined by a chart similar to the one below, which compares chord qualities. The I chord in G major—a G major chord—is also the IV chord in D major, so I in G major and IV in D major are aligned on the chart.
Abbreviated key signatures and chord spellings (such as "Cm" and "B ♭ M", or "c" and "B ♭") should be avoided in prose. In prose, rather than analysis, always use the capital letter, adding the words major or minor if necessary, [5] for example, "the piece is in D minor" or "the B major concerto".
Two added chords with mixed thirds, thirds separated by octave [1] Chord on left Right. Conventionally, the third is third in importance to the root and fifth, with the third in all primary triads (I, IV, V and i, iv, v) being either major or minor. In jazz chords and theory, the third is required due to it determining chord quality.
Dyads can be classified by the interval between the notes. [2] For example, the interval between C and E (four half steps) is a major third, which can imply a C major chord, made up of the notes C, E and G. [3] In a triadic context chords with omitted thirds may be considered "indeterminate" triads. [4]
Especially in its most common occurrence (as a triad in first inversion), the chord is known as the Neapolitan sixth: . The chord is called "Neapolitan" because it is associated with the Neapolitan School, which included Alessandro Scarlatti, Giovanni Battista Pergolesi, Giovanni Paisiello, Domenico Cimarosa, and other important 18th-century composers of Italian opera.
Minor major seventh 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.
A scale-step triad is designated by an uppercase Roman numeral representing the scale degree of the root, much as in traditional "harmonic analysis" (see chord progression). Thus, in the above example (which is in G major), the G major triad that Schenker claims we perceive through the first two measures would be labelled "I". However, unlike ...