As our exploration of jazz piano chords continues, it’s a good time to acknowledge that tritone substitution principle that is so often used by the pros. There are variations on this concept but the most popular one is what we will be looking at here.
Specifically, we are looking at tritone substitution as it applies to dominant 7th chords. Your perspective of jazz piano chords will expand as you become more and more familiar with this strategy. Let’s see how this works. We’ll start by looking at a G7 chord in its basic root position here:
G B D F
1 3 5 7
You’ll notice that we have highlighted the 3 and 7 of the chord in red. You’ll see why in a moment.
Let’s give attention to the root of this chord, the G. What is the note that exists a tritone away from G? (A tritone is an interval of three whole steps)
Whether you count three whole steps to the left or to the right, you arrive at Db, since a tritone divides an octave exactly in half. Now, let’s create another dominant 7th chord with Db as the root. This results, of course, in a Db7 chord:
Db F Ab Cb
1 3 5 7
Pay special attention to that highlighted 3 and 7 of this chord. What do you notice?
Look again at the G7 and then at this Db7. You’ll notice that the 3 and 7 of each chord are the same! That’s right. The 3 of the G7 chord is the 7 of the Db. Likewise, the 7 of the G7 is the 3 of the Db.
The 3 and 7 are the most important notes in a 7th chord. These are the notes that one could say define the chord. Since this is so, a very interesting possibility makes itself evident. Because the 3 and 7 of each of these chords coincides and these are the essential chord tones (more important than the 5), we can use one of these chords as a substitute for the other!
So, yes, if your tune calls for a G7 chord, you can consider playing a Db7 in its place… and vice versa. Essentially, the only thing that is changing is the root. This can quite a very tasteful option, depending on what the melody note is and the context of the chord itself. Also, your personal taste comes into play here as to which you prefer.
There is much more than can be said of this concept of tritone substitution but, for now, you are highly encouraged to become curious and explore your tunes by looking for those dominant 7th chords and considering substituting the dominant 7th chord whose root is a tritone away, as we have done above.
Your eyes and ears are about to open! Take your time with this and notice places where you prefer the substitute chord and where you prefer the original one. It’s your exercise of this privilege of choice that contributes to your own personal playing style!
Remember…
Always…
ALWAYS…
PLAY WITH PASSION!
Musically,
Dave
www.PianoAmore.net
www.ProProach.com

Here we will illustrate one of the most popular jazz piano chords of all time from the perspective of the pros. Yes, it’s another one of those “stock” voicings that you just have to be familiar with. Also, you’ll want to learn this one in all the keys. Not only will you want to but you’ll find it to be one of the easiest jazz piano voicings to execute as well
During one of lessons that focused on cocktail piano chords, we introduced the 1-7-3-5 chord voicing. We arrived at this voicing by simply starting out with a 7th chord in its basic root position like this:
This is one of those cocktail piano chords that sounds great when climbing up the diatonic scale, as it sounds great over all the chord qualities, including but not limited to minor 7ths, dominant 7ths, diminished 7ths, and half-diminished chords.
As the chord symbol states, we are now playing a 9th chord, specifically Cmaj9.
Your exploration of cocktail piano chords must include the eventual understanding and implementation of diatonic 7th chords. In essence, within a given key, the diatonic system represents the “skeleton” of that key that you are playing in.
As a follow-up to our recent introduction to 12 bar blues piano, let’s take a look at another scale that you will want to be familiar with. We already mentioned one, which is the blues scale. The other scale that you will want to have a handle on when it comes to improvising over those dominant 7th chords is the Mixolydian scale.
As a cocktail piano player, you’ve just got to have a bit of a handle on playing some 12 bar blues piano. It’s a nice way to interrupt your routine with some tasteful variation. In addition, as you become more and more acquainted with playing blues piano, you’re sure to use some of that “bluesy” playing in your favorite standard songs, too.
Your investigation of jazz piano chords would be well served by gaining a familiarity of drop 2 voicings. It’s one effective way to take what you already know to more creative levels for sure. As a cocktail piano player, you’ll absolutely learn to love this approach to voicing chords on the piano. Simply playing a couple of drop 2 voicings in succession results in your sounding like you know what you are doing at those keys.
As you have fun with different piano chord progressions, one that is easy and yet conducive to achieving some interesting sounds on those keys is shown here:
As you explore your world of cocktail piano chords and voicings, you will undoubtedly find yourself investigating open voicings if you haven’t already. In this message, I would like to suggest a concept that is so very easy to get a handle on yet is very effective at the same time.
One piano improvisation technique that you absolutely want to make a regular part of your practice routine is the use of chord tones. Please don’t make the mistake of underestimating the power of this improvisational approach.