it is a more expansive subject than even these connections. music was taught as part of the Quadrivium as music is the number in time. the second part of the Quadrivium is geometry, which is the number in space. the last part of the Quadrivium is astronomy, which is the number in space and time. so you can see how Einstein was able to do so much with the concept of space-time. this presents a coherent, comprehensive structure by which we may understand the world around us. to anyone interested i would recommend The Trivium Method and The Quadrivium. these are the basis of the classical education, that have enabled the building of civilization. i would be interested in your thoughts on the A-432 tuning. this is a more natural tuning that corresponds more closely to the natural resonances of matter in the natural world (there is that, matter-energy, Einstein connection again). the common tuning today is A-440. i have seen experiments that show A-432 to be more harmonizing to the hemispheres of the brain, allowing more organized, coherent thinking. there are softwares to convert the A-440 to A-432. i find this very useful. i think that it probably varies from person to person, a little. this is all related to the Schumann resonances and the earth-sun energetic system in which we evolved. there is more than i can get into here. there are many who are resistant to this to the point of anger, i'm not sure why. these are demonstrable physical principles involving matter. i can elucidate further if you are interested. so, any thoughts?