Music theory > Lessons > Pitch of sounds > Intervals > Doubly augmented third

Doubly augmented third

In music theory, a doubly augmented third is an interval that has six half steps united states of america (semitones united kingdom).

The doubly augmented third requires that:

- The interval must be a third interval (three note names between the first and the last).
- The interval must have six half steps.

What does a doubly augmented third look like?

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


How to recognize a doubly augmented third?

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 C / E♯♯:

Let's take the C major scale to have C as the tonic:

C major scale

From the rule stated above, the interval C / E♮ is a major third, so the interval C / E♯ is an augmented third, and so the interval C / E♯♯ is a doubly augmented third.

Inversion of the doubly augmented third

The inversion of the doubly augmented third is the doubly diminished sixth.

Here is an example of a doubly diminished sixth:


Musical examples of doubly augmented third

No examples yet, but feel free to send me some examples!

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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