Well first just know that I play music, but I can't read it. I learned by ear, as well as taught myself all the cords and scales. but another brother mentioned he builds guitars and he said the best sounding instruments are the ones made with the phi ratio, which he uses in making his instruments. But as far as my own research goes, sound frequencies most notably ones inaudible ones can produce certain effects on our brains. Also the field of cymatics shows how sound possibly had an effect on the creation of the universe. Theres a YouTube video of a man named Hans Jenny, describing cymatics, and he believes that when God spoke in genesis it was actually this. If your not familiar of cymatics this is what wikipedia defines it as: Cymatics (from Greek: κῦμα "wave") is the study of visible sound and vibration, a subset of modal phenomena. Typically the surface of a plate, diaphragm, or membrane is vibrated, and regions of maximum and minimum displacement are made visible in a thin coating of particles, paste, or liquid.[1] Different patterns emerge in the excitatory medium depending on the geometry of the plate and the driving frequency. Check this video out, it's quite the watch. Music also has a fractal number value as well, check this site out. reglos.de/musinum. a basic overview of how. But I'm certain that when we hear about music of the spheres, it's a reference to the vibrational frequencies of a body of mass in a vacuum. I'm still reading on this particular subject, so any info you guys have to share, would be greatly appreciated.