Music theory > Lessons > Pitch of sounds > Intervals > Doubly diminished fifth

Doubly diminished fifth

In music theory, a doubly diminished fifth is an interval that has five half steps united states of america (semitones united kingdom).

The doubly diminished fifth requires that:

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

What does a doubly diminished fifth look like?

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

doubly diminished fifth

How to recognize a doubly diminished 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 F♯ / C♭:

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

F major scale

From the rule stated above, the interval F♮ / C♮ is a perfect fifth, so the interval F♯ / C♮ is a diminished fifth, and so the interval F♯ / C♭ is a doubly diminished fifth.

Inversion of the doubly diminished fifth

The inversion of the doubly diminished fifth is the doubly augmented fourth.

Here is an example of a doubly augmented fourth:

doubly augmented fourth

Musical examples of doubly diminished fifth

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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