musictheory_cov

11. The following are examples indicating the differences between all the intervals
    mentioned: diminished, minor, major, and augmented.

12 .It will happen that the diminished or augmented interval will contain a double
flat or a double sharp. It is important that you keep these accidentals and not
change them into enharmonic notes. By changing the note, you alter the interval.
For example, the diminished 7th of F is Ebb. If you change the Ebbto D, you
have just altered the interval to a perfect 6th, a completely different interval.

Incorrect to change like this.

Dim 7th Maj 6th

Dim 2nd Min 2nd Maj 2nd Aug 2nd Dim 2nd Min 2nd Maj 2nd Aug 2nd

Dim 3rd Min 3rd Maj 3rd Aug 3rd Dim 3rd Min 3rd Maj 3rd Aug 3rd

Dim 6th Min 6th Maj 6th Aug 6th Dim 6th Min 6th Maj 6th Aug 6th

Dim 7th Min 7th Maj 7th Aug 7th Dim 7th Min 7th Maj 7th Aug 7th