Tuesday, 8 October 2013

What are the Triads or Chords?

Most Basic chords consists of the specific arrangements of the three notes, called Triads. A triad is a simultaneous combination of three notes. Triads consists of Root note which gives the chord its letter name and 3 interval above the root note & the 5th interval above the root note. All triads are three note chords, but not all three note chords are triads.

There are fourth different kind of triads-major, minor & diminished & augmented. Although the intervals that make up the triads are always thirds, they differ in that they may be either major or minor thirds. Every interval has an effect on the sound of the chord, but it is the root that determines the chords identity. It is the interval from the root to the 3rd note of the group that determines whether they are major or minor. A major triad with the sharpened 5th is called augmented and a minor triad with a flattened 5th is called diminished.

The C major triad:-                            C (1st), E(3rd) ,G (5th)
The C augmented triad:-                    C(1st), E(3rd),G# (#5th)

The C minor triad:-                            C(1st), (Eb) (b3rd), G (5th)
The C diminished triad:-                    C(1st), (Eb) (b3rd), Gb (b5th)

Triads Inversion:- The four triads shown above are all in the root position. This means that the root or tonic note is the lowest note in the chord. If the lowest note is not the root the chord is said to be inverted. In this case the term root may still be used to describe the lowest note but it will no longer be the tonic. If you take a C major root position triad and raise the tonic by an octave, the 3rd will become the lowest note. This form of the triad is called the first inversion. If you now raise the 3rd by an octave, the 5th will be left as the root. This form is called the 2nd inversion. Repeating the process once again brings you back to the root position triad one octave higher. In this way it is possible to get three different sounds from one triad. Because the three notes have the same key-center and tonality, whatever their arrangement, they have the same name.

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