Augmented fifth

Augmented fifth

In music theory, an augmented fifth is an interval that has height half steps (semitones). Explanations and excerpts from famous works

In music theory, an augmented fifth is an interval that has height half steps united states of america (semitones united kingdom).

The augmented fifth requires that:

  • The interval must be a fifth interval (five note names between the first and the last).
  • The interval must have height half steps.

What does an augmented fifth look like?

Here is an example of a melodic augmented fifth (two music notes in a melody) and a harmonic augmented fifth (in a chord):

Augmented fifth

How to recognize an augmented fifth?

Rule of music theory: All intervals in a major scale starting with the tonic (degree I) are either major or perfect, and only unison, octave, fourth and fifth are perfect (the others are major).

Example with the interval A♭ / E♮:

Let's take the A flat major scale to have A♭ as the tonic:

A flat major scale

From the rule stated above, the interval A♭ / E♭ is a perfect fifth, so the interval A♭ / E♮ is an augmented fifth.

Inversion of the augmented fifth

The inversion of the augmented fifth is the diminished fourth.

Here is an example of a diminished fourth:

Diminished fourth

Musical examples of augmented fifth

Interval identification game

You will find this interval in my Intervals identification game:

Find all my music theory games by clicking this link music theory games
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