So I just played a little progression for you that included triads. Triads, that is the first chord we're going to talk about in this course. What is a triad? Of course, triad, you think of the word three. And if you look at the screen there, there is the major scale with a triad. Three notes: a triad consists of the one, the three, and the five. The root, which is the same thing as the one, the third, and the fifth. This is what we call a major triad. And this major triad is built upon C, major third up from C, then a minor third up from E which is a G. One, three, five, C major triad, your first chord. C major triad in the key of C is the one chord. It's built upon the first degree, the one chord. Now if we built another triad, and so we built it on F. One, three, five in the key of F. F, A, C. This is an F major triad. la la la, Do, Mi, So. F, A,C. That would be the four chord in the key of C. When the key of C, one, two, three, four as the four cord which is F, F major triad. So we have the one triad, C major triad, the four major triad which is F major triad. And let's do another one on the key of G. So we have G, up a major third, then up a minor third, G major triad. One, three, five. Based upon G is your one, three, five, B, G, I'm sorry, B, D. G major triad. So we talked about the major triad and we based that major triad on three different notes: C, F, and G. Otherwise known as the one chord, the four chord, and the five chord. C, F, and G. The major triad: one, three, and five. So next, I'd like to talk about the minor triad. We know the major triad has a one, three, and a five in it. Now the only difference between a major triad and a minor triad is one note. It's the third. The third of the scale is E. This is the C triad. The third is E. To make it minor, you just take it down a half step to E flat. So now you have a one, a flat three, and a five. C minor triad. Hear the difference between minor, now this is major. Minor. Major. Minor. Major. Okay? Now, if we're gonna take that and go to F, play F major triad. To make it minor, we just take that third, that middle note there, and go down a half step. Now we have an F minor triad. C minor. F minor. C minor. F minor. C major. F major. C major. F major. The minor triad. One, flat three, five. One, flat three, five. The minor triad. Okay, now we have the minor triad and the major triad, what I'd like you to do is I'd like you to sing each pitch of the triad. We'll start with the major triad. Do, Mi, So. Sing that with me. Do, Mi, So. As a major triad. la la la. Now to do a minor triad, we'll just simply take in that third and make it, take it down a half step. So you have La, La, La. Sing La with me this time on a minor triad. La, La, La. If you use Solfeggio, it will be Do, Mi, So. Sing that: Do, Mi, So. Do, Mi, So. So we have major: Do, Mi, So. La, La, La. Minor: Do, Mi, So. La, La, La. That's the difference between the two: kind of a bright sound, kind of a darker sound. Major triad. Minor triad. So now I'm going to play a major triad or minor triad, and you tell me which one it is: major or minor. Here it is again. Here's another one. Major or minor? Major or minor? Here's another one. Major or minor? Here's the fourth one. And here's the last one. Major and minor triads. Major triad: one, three, five. Minor triad: one, flat three, five. Major. Minor.