Chord Inversions

A chord is inverted when a chord tone other than the root is the lowest sounding note.

C major contains C, E and G. Its three bass positions are:

All three remain C-major chords because they contain the same pitch classes and C remains the harmonic root.

Take the lowest note and move it up one octave.

Starting with C-E-G, move C upward to get E-G-C. Move E upward to get G-C-E. Move G upward and you reach C-E-G again in a higher register.

This produces close-position examples that are easy to see. In real music, the upper notes can be spread across several octaves.

A seventh chord has four chord tones and therefore four bass positions.

For Cmaj7:

Third inversion means the chordal seventh is in the bass. Cmaj7/B is one way to write that position as a slash chord.

The bass note determines the inversion. The order, spacing and duplication of notes above it determine the voicing.

E-C-G and E-G-C are both first-inversion C major because E is lowest. One is a different voicing of the same inversion.

A note may also be doubled. E-C-G-C still has E in the bass and remains first inversion.

A slash chord names a chord followed by its bass note. C/E is a C-major chord over E, so it is first inversion.

C/D places D in the bass, but D is not a chord tone of C major. It is therefore a slash chord without being an inversion of the C triad.

Read the symbol in two steps: identify the chord before the slash, then play the bass note after it.

Inversions reduce unnecessary movement between voices.

Compare C major to F major:

The second version places F major in second inversion, F/C. C stays in the bass, E moves to F and G moves to A.

Smooth voice leading helps a progression sound connected and makes keyboard or ensemble parts easier to play.

Choosing an inversion also chooses the bass note. That lets the bass move by step while the chord roots follow another pattern.

The progression C-G/B-Am uses bass notes C-B-A. G/B is first-inversion G major, so the middle bass note descends by one semitone instead of jumping from C down to G.

A stepwise bass line can connect chords, create a countermelody or lead toward a cadence.

They can change emphasis and voice leading without necessarily changing the chord's basic function.

G7/B still functions as a dominant chord in C major. B in the bass strengthens its upward pull to C.

Context matters especially for second-inversion triads. In classical tonal writing, a cadential C/G before G7 often functions as part of the dominant arrival instead of acting as an independent tonic chord.

Name the notes and bass first, then interpret function from the progression.

Root position makes the root easiest to hear in the bass. First inversion often creates a smoother bass connection. Second inversion puts the fifth below the root and may sound less final in a tonal cadence.

These are tendencies, not fixed emotions. Register, rhythm, doubling, instrumentation and the surrounding chords can change the result.

A useful comparison keeps everything else constant: play one C-major position at a time at the same volume and register.

Play C-E-G, E-G-C and G-C-E. Say root position, first inversion and second inversion as you play.

Repeat the process for F major and G major. Then connect C, F and G while moving each hand position as little as possible.

Finally, follow only the bass notes. If you can sing the bass line and name the chord above each note, you are using inversions as musical tools inside a complete progression.