A chord inversion rearranges which note sits on the bottom (the bass note). A C Major chord always contains C, E, and G regardless of inversion, but the character and function changes dramatically depending on which note is lowest. Think of it like rearranging furniture in a room: the same pieces, but a completely different feel.
Inversions are essential for smooth voice leading (keeping notes close together when moving between chords), creating interesting bass lines, and adding variety to your harmonic palette. Every pianist, guitarist, and arranger uses inversions constantly.
When chords change, inversions let you keep the bass moving by small steps instead of large jumps. This creates a more connected, flowing sound in your progressions.
By choosing specific inversions, you can create a bass line that moves stepwise or follows a melodic pattern, adding a second layer of musical interest beneath the harmony.
Root position sounds stable and grounded. First inversion sounds lighter and more open. Second inversion sounds suspended and wants to resolve. Each inversion has its own personality.
Root Note
Chord Quality
Inversion
Bass: C | Notes (bottom to top): C - E - G
All chord tones highlighted. The bass note in the current inversion is C.
Inversions are written using slash notation: the chord name, a forward slash, then the bass note. For example, C/E means a C major chord with E in the bass (1st inversion). The slash tells the player which note should be the lowest sounding pitch.
Note that slash chords can also indicate non-chord bass notes (like C/Bb, where Bb is not part of a C major triad). In those cases, the bass player or left hand simply plays that note underneath the chord. Here, we focus on inversions where the bass note is always a chord tone.
C Major
Bass: C
Root Position
C Major/E
Bass: E
1st Inversion
C Major/G
Bass: G
2nd Inversion
In classical music theory, inversions are identified by figured bass numbers. These numbers indicate the intervals above the bass note, not above the root. This system dates back to the Baroque period when keyboard players would improvise harmonies from a bass line with numbers written underneath.
| Inversion | Figured Bass | Bass Note Is | Example |
|---|---|---|---|
| Root Position | 5/3 | Root | C Major |
| 1st Inversion | 6/3 | 3rd | C Major/E |
| 2nd Inversion | 6/4 | 5th | C Major/G |
The real power of inversions becomes clear when you hear chords in a progression. Compare these two versions of a I - IV - V - I progression in C major. The first uses all root position chords (jumpy bass). The second uses inversions for a smooth, stepwise bass line.
All root position chords. The bass jumps around by 4ths and 5ths.
Jumps: +5, +2, -7 semitones
Using inversions to create a stepwise bass line. The bass moves smoothly by steps instead of leaps.
Steps: 0, -1, +1 semitones
Click through each inversion to see how the bass note changes. Notice how each inversion shifts the lowest pitch while keeping the same chord tones.
Bar height represents relative bass pitch. Click a bar to hear just the bass note.
Test your ears! You will hear C Major in a random inversion. Try to identify which inversion is playing based on the bass note.
| Inversion | Stability | Common Uses | Example Context |
|---|---|---|---|
| Root Position | Most stable | Opening chords, final cadences, strong harmonic statements | The first and last chord of most songs |
| 1st Inversion | Moderately stable | Passing chords, creating stepwise bass lines, lighter sound | Connecting I to ii with a smooth bass |
| 2nd Inversion | Unstable, needs resolution | Cadential 6/4 (before V), passing 6/4, pedal 6/4 | The I6/4 before V at the end of a phrase |