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A minor triad has a minor third (m3) on the bottom, a major third (M3) on top, and a perfect fifth (P5) between the outer notes. In harmonic analysis and on lead sheets, a C minor chord can be notated as Cm, C−, Cmin, or simply the lowercase "c". A minor triad is represented by the integer notation {0, 3, 7}.
minor triads contain a minor third with a major third stacked above it, e.g., in the minor triad A–C–E (A minor), A–C is a minor third and C–E is a major third. diminished triads contain two minor thirds stacked, e.g., B–D–F (B diminished) augmented triads contain two major thirds stacked, e.g., D–F ♯ –A ♯ (D augmented).
In music, triads are primarily built on the circle of thirds. In fact, by going progressively forward in sequence of the circle of thirds, many chords can be constructed. For example, in A major, the first notes in the cycle of thirds are A, C♯, and E, which is also the three notes present in the A major triad. [2]
It comprises a major triad with the added major sixth above the root, common in popular music. [3] For example, the chord C 6 contains the notes C–E–G–A. The minor sixth chord (min 6 or m 6, e.g., Cm 6) is a minor triad, still with a major 6. For example, the chord Cm 6 contains the notes C–E ♭ –G–A.
As discussed above, major and minor triads are constructed by stacking thirds: The major triad concatenates (M3,m3), supplementing M3 with a perfect-fifth (P5) interval, and; the minor triad concatenates (m3, M3), supplementing m3 with a P5 interval. Similar tertian harmonization yields the remaining two triads:
There are four basic triads (major, minor, augmented, diminished). They are all tertian —which means defined by the root, a third, and a fifth . Since most other chords are made by adding one or more notes to these triads, the name and symbol of a chord is often built by just adding an interval number to the name and symbol of a triad.
Other scales with a minor third and a perfect fifth (i.e. containing a minor triad) are also commonly referred to as minor scales. Within the diatonic modes of the major scale, in addition to the Aeolian mode (which is the natural minor scale), the Dorian mode and the Phrygian mode also fall under this definition.
This triad is consequently called the supertonic diminished triad. Like the supertonic minor triad found in a major key, the supertonic diminished triad has a predominant function, almost always resolving to a dominant functioning chord. [7] If the music is in a minor key, diminished triads can also be found on the raised seventh note, ♯ vii o.