We humans have a range of sound, that is, we can hear from certain frequency to certain frequency. Out of that frequency we can't hear. That is why ants can communicate between them and he hear nothing, or snail as the wonder in our backyard.
Anyway. Out of this chromatic scale, in a range we all can hear (the piano has most of the tones in this range), has a melodic scale. One octave of the chromatic scale is 12 tones + the root higher. One octave of the melodic scale is only 7 + the root higher, so 8, hence the name octave = 8.
The tones for the melodic scale are: DO (C), RE (D), MI (E), FA (F), SOL (G), LA (A), SI (B). In the US we are familiar with the letter. Overseas, they go with the names. In India they call them in a different way. But we are all family, correct. Call them the way you want them.
The melody line is created out of either the melodic scale, or a combination with the chromatic scale (e.g. blues scale). But, in our culture (not all the cultures around the world have the same system), we create harmony using chords. Other cultures don't use chords. And a few cultures don't use scales at all.
How To Build Guitar Chords
This is going to sound like a recipe for a salad. From the melodic scale (C, D, E, F, G, A, B), we set what scale are we going to use. If we decide to go with the C scale, we will start our scale on...C. If we change our mind and want to use the D scale, we will start on...D. Same with E, and F, and G, etc.
Back to the C example. If C is your first key, D is your second, E is your third, F is your fourth, G is your fifth, and so on.
The formula to build a Guitar Chord = take the first (C) + the third (E) + the fifth (G). Play these three tones at the same time (or arpeggio, it doesn't matter), and you will hear the beautiful sound of the C Major chord.
If you have a friend that can play guitar, have him (or her) play the C chord, and over that sound you can do a solo using the C major scale, in other words, play whatever you want using only C, D, E, F, G, A, or B.
If you are not sure where to find any of these tones on your fretboard, and still want to impress your friend with your guitar skills, contact us to suggest you some ways to get really acquainted with this beautiful instrument.
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