Tip #183 – Why the iv o7 Chord Works

A diminished seventh chord built on the fourth scale degree of the key. Think about it for a second.

Now, do you think this chord can resolve to the tonic in a iv o7 – I progression?

Let’s see in comparison to a regular ii 7 – V 7 – I progression:

If you play these chords, you will hear that both of them sound like complete resolutions to the I chord. But why?

Well, first start off by looking at the enharmonics of the iv o7 chord. Notice how there are 3 shared common tones. What’s more, the one note that is different is the b9 of the V chord. So basically, the iv o7 acts as a V 7(b9) chord with the seventh in the bass.

Try it out and see what else you can use it with.

Thank you so much for taking the time to read! Feel free to comment, share, and subscribe for more daily tips below! Till next time.

Author: Bryan M. Waring

Bryan Waring is a graduate of USM's School of Music with a B.M. in Performance – Composition and is now attending Belmont University for a M.M. in Commercial Media – Composition & Arranging. During his time at USM, he studied violin with Dino Liva and composition with Dr. Daniel Sonenberg, as well as has premiered several pieces during the semiannual Composer's Ensemble concert series. In 2017, Bryan was a writer for the original musical theater work of "Molded By The Flow," directed by Paul Dresher and Rinde Eckert. Outside of school, Bryan has been involved with writing music for videogame developers at Portland's CI2 Lab, collaborating with the King Tide Party, and studying with Larry Groupé (Straw Dogs) in San Diego. Now living in Nashville. Along with composing, Bryan teaches music to children, receiving the Master Teacher Award for his work at ESF Camps; and does audio engineering for live ensembles. Besides talents in music, Bryan is a team-player in any competitive work environment; equipped with skills in leadership, organization, mathematics, creativity, communication, and managing. On the side, Bryan has worked as a model for several skilled artists in the New England area. Among his other accomplishments include obtaining the rank of Eagle Scout in April 2013 with a project of building a side parking area with guide rails for Webb Mountain Park in Monroe, CT.

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