It is a number 2 interval, but being 4 semitones, it is beyond an augmented second. So, what it is?
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related: music.stackexchange.com/questions/15430/…– Tim HCommented Apr 17, 2018 at 11:11
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1 Answer
The interval from any G (flat / sharp / neutral) to any A (flat / sharp / neutral) (in the same octave) is always a second. In your case, since the G is flat and the A is sharp, you have a doubly augmented second.
Of course, this interval is sonically equivalent to a major third.
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3Has anyone ever personally seen this used? I have not. I'd be curious to see an example. I cannot think of a theoretical justification for using it, either. I'd be interested in an explanation for that as well. Commented Apr 17, 2018 at 11:09
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1@HeatherS. See the question that Tim H posted as a comment to the original post: music.stackexchange.com/questions/15430/…– RichardCommented Apr 17, 2018 at 13:21
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4“Of course, this interval is sonically equivalent to a major third.” This is only true in equal temperament.– 11684Commented Apr 17, 2018 at 13:39