大调音阶里的和弦

Hi. This is Hub Guitar.

Let's talk about building chords using the major scale.

Every note in the major scale can be turned into a chord. And the process is the same for every note, although the results are a little different.

First let's talk about the process. For now, when we turn a note into a chord, we will add 2 notes on top of it. The result is a chord, of which the original note is the root.

The notes we add will be from the scale that we're working in, and they will be odd numbers starting on the root of the chord. So we take the first note, skip the next, and add the third. Then we skip the next note, and add the fifth. Now we've got a chord. Later on we'll talk about extended harmony where we add even more notes, but for now that's the basic idea.

If we do this for every note in the C major scale, we will encounter a total of three different chord types: major chord, minor chords, and diminished chords. The result will be a major chord when we have a big jump followed by a little jump. That big jump is called a "major third" as it is a third (C...D...E...) and it's the bigger of two possible kinds. The result will be a minor chord when we have a little jump followed by a big jump. That little jump is called a minor third. It's still a third (D...E...F...) but this time it's one half-step smaller so it sounds a bit sad. Finally, there is an unusual result that happens in one case: it's a little jump followed by another little jump. This is called a diminished chord. It's not used very frequently, but it's useful to know about it.

So those are the three types of chord that you can get as a result if you stack the notes of the C major scale into thirds in order to build basic triads. So if you want to get deeper into this, take the C major scale on the guitar, and for each note, figure out how to stack it into thirds and then figure out how to play those groups of notes as chords.