# Doubly diminished sixth

In music theory, a doubly diminished sixth is an interval that has six half steps (semitones ).

The doubly diminished sixth requires that:

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

## What does a doubly diminished sixth look like?

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

## How to recognize a doubly diminished sixth?

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 B / G♭♭:

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

From the rule stated above, the interval B / G# is a major sixth, so the interval B / G♮ is a minor sixth, so the interval B / G♭ is a diminished sixth, and so the interval B / G♭♭ is a doubly diminished sixth.

## Inversion of the doubly diminished sixth

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

Here is an example of a doubly augmented third:

## Musical examples of doubly diminished sixth

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

## Interval identification game

You will find this interval in my Intervals identification game: