It certainly is an interesting idea.
I was never identified as GT (never had any testing) but most probably am MG. Math was always my very best subject... not my favourite, mind you, but the one that I 'just got'. I always felt that it was the most simple of subjects because your answers were either right or wrong. If you could understand the steps than it was easy to get to the right answer. I have played the piano since I was 5, so almost 30 years now. I don't know if I was/am a gifted pianist or I just worked my butt off to be slightly better than a lot of others. In any event, I always found that the music 'just made sense' and, in my mind, it gave me the same feeling as math did. You either did it right or you didn't. Hard to put into words, I guess!