Most agree that everything is energy. Energy vibrates. Everything-that-we-know-of vibrates. When you count the vibrational pulses, you get a frequency. Everything that you can think of - has a frequency, including your thoughts as you read this!
Your body needs certain frequencies to work. It needs a balanced amount of all frequencies. Your sound nutritional needs can be compared to the rainbow, which has equal amounts of each color in the spectrum. In familiar words, we need vitamins, nutrients and minerals (all frequencies).
People say that you are what you eat, but also you are what you listen to. Using software by SoundHealthOptions.com, you can observe every frequency in your body. You can listen to a certain sound and then see that your body absorbed it and that it is the same frequency as a nutrient or something else.