Theory of Chord.

Chords are the vertical arrangement of notes from a scale. The study of chords is called Harmony. Harmony is concerned with how one or more notes interact, and how they follow each other. Many people define chords as several notes played simultaneously. It must be pointed out that it is not possible to play music of a chordal nature on the flute, trumpet, or a lone human voice, all three being monophonic instruments. Since obviously monophonic instruments cannot play a stacked chord where the notes are sounded simultaneously; the chords are implied. A simpler way of viewing this is that when chord tones are played as an arpeggio on a monophonic instrument the human ear interprets that there is a harmonic structure. We therefore define a chord as the basic element of harmony. To start with we will look at examples of the most basic chord, the triad.

Triad.

The triad is a class of chords, specifically three-note chords formed by this formula: 1-3-5 or root, third, fifth. In this example they are constructed of two consecutive thirds.

Kinds of Triads

	Root	3rd	5th
Major	1	3	5
Minor	1	♭3	5

♭=flat/lowered; #=sharp/raised

Here are some of Major Chord :

Chord C

Chord D

Chord E

Chord F

Chord G

Chord A

Chord B

Here are some of Minor Chords :

Chord Bm

Chord Dm

Chord Em

Chord F#m

Chord C#m

Chord Am

Chord G#m