Diminished 7th Chord – Part 2 – The Deceptive Dimished 7th

Welcome back to my two-part series on Diminished 7th Chords. Last week we talked about What a Diminished 7th Chord is and today we’re going to get a bit more in-depth about how and why the diminished 7th chord can be deceptive.

Last week we talked about how you can’t really invert a diminished 7thchord because it’s all minor thirds. There are however three ways to resolve these chords.

The first way to resolve a diminished 7th chord is to resolve it upward by a half step. So a B diminished 7th chord would resolve to C major or minor.

The next way to resolve diminished 7th chords is rather fascinating. If you lower any note in a diminished 7th chord by a half step and you will get a dominant 7th chord which can resolve in its usual manner from V7 to I. In C major, a G7 would resolve to a C major triad.

This might seem overwhelming but this is what makes the diminished 7thchord so deceptive yet so intriguing. It’s a wonderful chord and tool to use for improvisation and it’s one indicator of where a piece is going and the structure behind it.

The last way to resolve a diminished 7th chord is truly deceptive. You can take any note of a diminished 7th chord and make it the root of a major or minor triad. Try this out and you will be amazed a the unexpected sound!

This is a complex lesson and it would be a good idea to watch this video and try out the different resolutions so you can hear them. To recap: You can’t invert a diminished 7th chord because it’s all minor thirds even when inverting. There are three ways to resolve a diminished 7th chord. These chords are incredibly useful tools for many musical applications and it’s a great idea to get familiar with them and how they work. Once you understand the concepts behind them you will find it easier to understand them when you encounter them in your music.

Thanks again for joining me Robert Estrin Robert@LivingPianos.com. If you have any further questions please feel free to ask and I look forward to bringing you more of these videos.