The chords will follow this formation below (where the Roman numerals indicate the degrees): Instead of specifying the tonality now (like C major, for example), let’s make it a little more generic: “ chords of a major key“, because if we apply this rule in the major scale of G, in the major scale of A, or in the major scale of any other note, we will always have one thing in common. But first, remember that we used the major scale of C as an example. We will see some examples of this subject (discovering the tonality of a song) soon. From the point of view of improvisation, when it comes to discovering the tonality of the song, nothing changes. Well, the only difference is that the latter contains one more note in each chord, making them “fuller”. Perhaps you are wondering what is the difference, from a practical point of view, of these two sets of chords that we formed. Note that here we have the minor seventh of D, so we use the symbol “7”, instead of “maj7” (which would characterize the major seventh).įorming the complete table, we get the following: Thus, the chord will be formed by the notes D, F, A, C. This is the Cmaj7 chord, since B is the major seventh of C.Īpplying the same rule to the next note (D), we will see that the seventh degree is C. Therefore, the first chord will be formed by the notes C, E, G and B. We have already seen the other degrees (third and fifth). We will thus have a set of chords just like the previous one, but formed by tetrads instead of triads.Īnalyzing the same C major scale, starting with the C note, we know that the seventh degree of the scale, counting from C, is B. We will do the same thing, but including the seventh degree, which characterizes a tetrad. The rule used to form the chords, just to recap, was to take the first, third and fifth degrees of the scale in question. We have already formed chords of a key using triads, and now we are going to extend this concept to tetrads. I hope this has motivated you to continue our study, having seen the importance and usefulness of this knowledge. If we know the scale shapes well, nothing prevents us from creating solos and arrangements automatically (a skill known as improvisation). Therefore, knowing the chords of a key is of great use: this knowledge allows us to know the notes that we can use to make arrangements on a certain song. With that, we know that the scale to be used to make a solo, improvise, create riffs, etc. If a song contains the chords of the key of C major, it means that the song uses the C major scale as its base. You have probably heard the question: “ What key is this song in?” Well, the tonality (or key) of a song depends on the chords present in that song. Well, chords of a key serve for many things, and at this point we’ll focus on the most basic point: it serves to set the tonality of a song.
All chords in all keys how to#
Great, you just learned how to form chords of a key. It is a good exercise to try to form the remaining chords of the key of C. You can also check the fifth of each chord, but you will notice that it will always end up being the perfect fifth, except for the last chord, which will have the flat fifth.
You must be realizing by now that we are forming the chords thinking about the triads and using only the notes that appear on the scale in question (C major scale).Īfter forming the triad, we observe whether the third of each chord has become major or minor. Therefore, the second chord is formed by the notes D, F and A (notice that this is the D minor chord, because the note F is the minor third of D). The third degree, counting from D, on this scale, is F. Now let’s build the chord of the next note on the scale, which is D. The first chord of the key of C major is then formed by the notes C, E, G (notice that this is the C major chord, since E is the major third of C). How do we do this?įor each note of the scale, the respective chord will be formed using the first, the third and the fifth degrees (counted from that note, on top of that same scale). Therefore, we will have seven chords, which will be the chords of the key of C major. Take the C major scale as an example: C, D, E, F, G, A, B.įor each note of this scale, we will form a chord. Chords of a key are chords formed from a given scale.
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