Moving from Chord Construction of Triads to Four Voices ChordsThis chord piano lesson is made for those who wish to take a step further with their harmony studies and establish the chord theory we've been learning so far.
Here are the new four voice chords we're going to cover: Click here if you'd like to start learning about piano chords from basics. Book RecommendationThis book stands alone or integrates with any method. For all ages, in private or group study, its graphics put chord shapes of triads, seventh chords, inversions and chord progressions securely into the hands. Summary charts and keyboard maps speed up learning and review. Notation and graphics give standard arpeggio fingerings for major and minor triads and all seventh chords. A section on other keyboard patterns in repertoire, such as chords divided between the hands, may be used as 5-minute units at lessons. Price: $14.95Let's refresh our memory for a moment. Until today we learned about the chord construction of three-voice chords (triads). We started to construct a chord from its root note by building thirds above it in the structure of a certain scale. When we added major third to the root note we created the chord construction of a major chord. ![]() So far so good. Next we learned to deal with the fifth note of the chord. However, we learned that we can raise the fifth and of a major chord and create an augmented chord or lower the fifth of a minor chord and make it a diminished chord.
Now I'd like us to go a step further and add a fourth voice over the triads in order to create a seventh chord. What we're basically going to do is simple.
In order to create a triad (three-voice-chord) we took the scale degrees and added the third and the fifth note of each scale degree within the scale structure.
Now we're going to take this one step further and add the seventh note and see what happens, like this example of G7. ![]() The Chord Construction of a Seventh ChordThe story of the seventh chord moves in two different dimensions. The first direction is to define the chord as a clear dominant chord and the other is to add color to the chord. We're going to talk about both aspects here. Adding the seventh note to the dominant chord (fifth degree)Earlier in our studies when we learned about 7th chords (Click here to go there) we talked about the dominant chord. I told you that the fifth degree is called "The Dominant" since it creates a clear tension that points us toward the tonic. In other words the fifth degree wants to go back home to the first degree. Great! But why? Because of voice leading. We can divide the notes in a scale to two groups, the inside notes and the outside notes. The so called inside notes are static notes. They symbol the relaxation in the scale and are serving as a skeleTone :). Each outside note in the scale wants to go towards an inside note. The relationship between these two groups in the scale allows us to create the relationships between the different chords. The more a chord contains outside notes the more it points toward the tonic. That's handy to know when learning about chord construction. ![]()
Now let's go back to chord construction starting from the dominant chord. The fifth degree of C major, G major contains these notes G, B, D, . two outside notes and one inside note.
G is an inside note and therefore it stays static. B, the third note of G major (B which is also the leading note in a C major scale) is the leading tone of C major and is clearly taking us back to C (The first note of the scale). D is the second note of C major and as an outside note it wants to go to E in this case. We can now see how G major leads us to C major. G major however could function also differently and lead us to some other scale so composer found a way to distinguish the chord as part of the C major scale in a way that it has to lead to the tonic without any doubt. We add the seventh note to the chord construction, which increases the tension even more towards the tonic chord.
F is the fourth note of C major scale and as I've shown you above, it is an outside note wanting to go to the third whithin half a tone which means more tension, and here it is, our new-born baby. Your tensed dominant chord will always take you back to the tonic chord C major.
![]() Now that we've really learned about the chord construction of the dominant seven chord here's once again a free piano chord chart of the I-V7-I in all twelve major scales. Pay attention to the voice leading in this chord chart. The Chord Construction a Major Seventh ChordWhat's we're going to learn next is about the possibility to raise the seventh note (Which is located a whole tone under the root note) and create a major seventh note (So instead of playing a C7th chord (C, E, G, Bb) you play (C, E, G, B).
The major seventh gives the chord a wide open sound deriving from the presence of two major thirds in the chord. In this case it serves as a color provider. Here's a free piano chord chart to make sure you get this right. The Chord Construction of a Minor Seventh Chord
It's important to realize that only MAJOR SEVENTH CHORDS function as dominant chords and the minor seventh chord is not strong enough for the because of less tensed voice leading. The seventh note in this case serves more as a color provider.The Chord Construction of Diminished Chords and Half Diminished Chords![]() ![]() The half diminished chord is called so because the seventh wasn't lowered like the other intervals of the chord. If we lower the seventh as well by a semi tone we get a chord made of three small thirds one on top of the other. Such a chord contains a lot of tenstion. ![]() Here's the final piano chord chart of this page with all twelve diminished seven chords. Next in our piano chord lesson I'd like to deal with the sus chords. Click here to have a look at the Sus Chords.
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