Teach Yourself Music Theory – 34.) Inverting Seventh-Chords

If you remember all there is to inverting triads, inverting seventh-chords should be no problem at all. On the other hand, if you still have trouble with inversions – I suggest you look over past posts before starting with this one.

As mentioned in the past, inverting a chord is like reordering the chord members… but this time, a note besides the root is in the bass.

Whereas a triad had three different inversions (one for each chord member), a seventh-chord will have four different inversions:

  • Root Position – where the root is in the bass; noted with a “7” symbol
  • First Inversion – where the third is in the bass; noted with a “6/5” symbol
  • Second Inversion – where the fifth is in the bass; noted with a “4/3” symbol
  • Third Inversion – where the seventh is in the bass; noted with a “4/2” symbol

These inversions can be noted with Roman numerals (below the staff) or in lead-sheet notation (above the staff):

Try writing various seventh-chords, identifying them, and then inverting them. Also, listen to how each of the inversions sound.

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Tip #4 – Crafting Melody with Chord Inversions

In chord voice-leading, the bass note has the most flexibility on how/where to move. While there are some strong suggestions to keep bass motion at intervals small – like under a perfect-fourth – there is certainly more leeway for a bass not in a chord to make large intervallic leaps… as opposed to inner voices and melody, which should move stepwise.

Now, what if these roles were reversed? Given, jumpy upper voices in a chord can sound a bit out of place; however, having the bass line be crafted like a melody can yield cool results of a smooth transition from one chord to another.

Take a chord progression for example:

After deciding on a progression, my next piece of advice is to find common tones between the chords as well as adjected notes by at most a minor third (though M3 and P4 can work, too). Make a note of all the possibilities. From there, write a melody within the harmonic rhythm that is smooth and overall stepwise in motion. Then, let those be the root positions and/or inversions of the chords you previously chosen.

Rest is there for you from there on out on how to play around with the upper voices and melody, but now you have a melodic line in the bass that can be used as a motif a basis for variation.

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.