Welcome to LivingPianos.com, I’m Robert Estrin. Today’s subject is about movie music. What is the secret of movie music? It all comes down to thirds relations. I’m going to show you a little bit of music theory behind movie music. Once you know how it’s done, it will take the mystery out of it. I’m going to show you the trick! How does movie music bring out emotions to make you feel a certain way? It comes down to median or third relations. Typically, harmonies on the piano are based upon movement in fourths and fifths. Those are perfect intervals. For example, one chord to a four chord. That’s the movement of a fourth. Or one chord to a five chord. Those are your primary chords, One, four, five, one is a classic cadence in music.
You can sometimes move in the relationship of a third when you’re within the key.
You can go from one to six, from C to A. Then you go down to F which is four. And that has an interesting sound as well. But it’s when you go out of the key that you’re in that it starts to get interesting. If you do that with fourths or fifths it will sound quite familiar. Let’s say you’re in C major and you want to change keys to D. How do you get to D? Go to the five of the D. The five of D is A. So if you’re in C major and you play an A seventh chord, that’s going to bring you right to D. If you want to go back, you play the five chord of C which is the G seven. That is very typical sounding harmony. Even though we went outside of the key of C major, it doesn’t sound particularly unusual. But when you do it in thirds it’s a very different sound. If you go from C to A major you will instantly recognize a very familiar theme from the movie Star Wars.
Going with thirds to minor keys produces a very compelling sound.
If you start with C major, then go to E minor, then G minor it’s an ambiguous tonality with amazing colors. You can then go to B flat minor. And you can go to major chords also. You get the sound of something mysterious. Because you can’t really predict where it’s going.
So that’s a little bit about third relations. I hope knowing the secret it doesn’t take the pleasure out of movie music for you! This technique is used so much of the time. Now that you know what to listen for, you may notice when you hear it. When you’re listening to film scores I want you to listen for that sound. There are so many film scores with major and minor chords in thirds. It’s such an interesting and captivating sound!
I hope you’ve enjoyed this. All of you out there who play the piano should experiment with this. Play chords, particularly major chords to minor chords a third away, and then go another third higher or lower. It’s such a rich sound! You can create these sounds for yourself. It might be the impetus for a composition or an improvisation. Thanks again for joining me! I’m Robert Estrin here at LivingPianos.com, Your Online Piano Resource.
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