Well, well... I learnt a new word from that article! I suffer from dyscalculia.
More to the point: I have always felt that music is good for development. I have always thought that it is far better than sport for developing team spirit and discipline in a co-operative rather than competitive way.
I can understand the dyscalculia thing too: seriously, I have always had a basic difficulty with numbers, even with counting. Even though I never took any instrumental class in my life until the age of 40, I found it helped a great deal with my elementary numeracy.
As to what sort of music is best? It is hard to remove oneself from prejudice in answering this. I well remember the "But it isn't music" reaction of my parents to the pop music of the sixties, but now, decades later, Lennon and Mccartney, among others, have been recognised as serious composers.
I'd say that that music which has some complexity of texture, melody and rhythm and which presents us with ever-changing sounds is the most beneficial, and that which consists of mere repetition, especially repeated thumps, is the least. You can, no doubt, detect my prejudice there!
Gobble, I hesitate to say that I know how you feel --- but you have put into words a sensation that might be like what music sometimes does to me, and you have said it very beautifully.
There is another "analogy" or sensation that sometimes occurs to me, and that is the feeling of being able to somehow breathe the music. I attend live concerts very regularly. I'd say that well over 90% of them are enhancing, but very, very few reach such great heights.
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