COMPOSITION OF A CHORD

A chord is always composed of notes which are called the tonic, third, fifth, and possibly the seventh to be played on demand (if indicated in the score )

- The tonic is the root that gives its name to the chord, and is usually the lowest note of the chord , played generally by the electric bass or double bass .

The third, fifth and seventh are intervals between notes defined as follows:

Major Third: 2 steps over the tonic
Minor third: 1 steps over the tonic
Diminished fifth: 3 steps over the tonic
Perfect fifth: 3 steps over the tonic
Augmented fifth: 4 steps over the tonic
Diminished seventh: 4 steps over the tonic
Minor seventh: 5 steps over the tonic
Major seventh: 5 steps over the tonic

Let's see how chords are encrypted:

For example, A-5bM7 :

- The - indicates a minor third (the third, if major, is not specified) (note = C)

- 5b indicates that the fifth is diminished (note = Eb)

- M7 indicates that the seventh is major (note =Ab)

It is therefore a chord built with the notes A + C + E flat + A flat

For example, B5 # 7

- No indication about the third, it is major (Note = Eb)

- 5# indicates an augmented fifth (Note = G)

- 7 indicated a minor seventh (note = A)

So this chord is built with the notes B + Eb + G + A

For example, A

- The third is major (Note = C # )

- The fifth is perfect (Note = E )

- The seventh is not played since not mentioned

The chord is composed of notes A + C# + E