The way we measure that, oddly enough to some and logically enough to others, is through the human voice. The voice is not just a speaking and singing tool, it's also a sound tool that very accurately and simply reflects the frequencies present in the brainwaves. If there's a frequency that's present in the body, it's present in our brainwave pattern because the brain is like the home office. So when a frequency is resonating in our brainwave pattern, it in turn is resonating in our voice. Balance is synonymous with good health.
Vibrational balance is just another term for good health.
In the even-tempered chromatic musical scale that we use in this country, there are 12 musical notes. It consists of thousands of frequencies. But we have to use something as kind of what you could call a grid, and we have to identify what those frequencies are in the body. Since, at least in the West, in this country, we have this preexisting scale that is fairly popularly understood as the chromatic scale, we use this 12-note scale to call these frequencies something in order to identify them. In my training and experience, it isn't necessary to understand and identity thousands of frequencies in the body.