Topic 6: Harmonic Inversions

In music, an  inversion is a chord formed by three or more notes in which the order of the notes is reversed from the original form.

Inversions are important in harmony because they can add variety and interest to a piece of music.They can also be used to create different effects, such as a sense of movement or tension.

Inversions can also be used to maintain the chord in a restricted range: In a piece of music, there is the bass, the chords, and the melody. In some cases, if we were to use only chords in root position, we would have serious problems with some fifths that could overlap or approach too closely to the melodic line. In these cases, using inversions can help to keep the chords within a more restricted range, which can make the music sound more balanced and pleasing to the ear.

Types of Inversions (triads)

There are two main types of inversions:

  • First inversion: in this inversion, move the root in the upper position.

  • Second inversion: in this inversion, the third of the chord becomes the upper note.





For example, a C major chord is composed of the notes C, E, and G. The first inversion of this chord is composed of the notes E, C, and G. The second inversion of this chord is composed of the notes G, C, and E.

Effects of Inversions

Inversions can have different effects on harmonies.

  • First inversion: The first inversion of a chord creates a sense of movement downward. This is because the third of the chord is a minor interval, which creates a sense of tension.
  • Second inversion: The second inversion of a chord creates a sense of movement upward. This is because the fifth of the chord is a major interval, which creates a sense of resolution.

In addition, inversions can be used to create different effects, such as:

  • A sense of tension or suspense: Inversions can be used to create a sense of tension or suspense in a piece of music. For example, a C major chord in first inversion creates a sense of tension, which can be resolved with a G major chord.

A sense of variety or interest: Inversions can be used to add variety or interest to a piece of music. For example, a piece of music that only uses chords in root position can become monotonous. Using inversions can help create a more interesting and engaging piece.

Use of Inversions

Inversions can be used in any type of music, from classical music to jazz to pop music. In classical music, inversions are often used to create a sense of movement and harmonic development. 

For example, a composer may use a first inversion to create a sense of tension, which can be resolved with a second inversion. In jazz, inversions are often used to create a sense of improvisation and creativity. A jazz musician may use inversions to create new harmonies and progressions. 

In pop music, inversions are often used to add variety and interest to a piece. For example, a pop song may use a first inversion to create a sense of movement, or a second inversion to create a sense of resolution. Inversions are an important harmonic tool that can be used to add variety, interest, and movement to a piece of music.